第十六章 單元測試題一 。選擇題(40分)1小新用西紅柿制作了一個水果電池，他用一片銅片和一片鋅片制作了它的兩個電極，做好該西紅柿電池后，小新用電壓表測量了它的電壓，你覺得它的電壓有多高？ A3V B220V C1.5V 2關于電源，以下說法中正確的選項是( )A是提供電荷量的裝置 B是提供電流的裝置C是提供電壓的裝置 D是提供用電器的裝置3用電壓表分別測量電路中兩盞電燈的電壓，結果它們兩端的電壓相等，由此判斷兩盞電燈的連接方式是： A一定是串聯(lián) B一定是并聯(lián) C串聯(lián)、并聯(lián)都有可能 D無法判斷.*4如圖1所示，電源電壓為6V，當開關S閉合后，只有一燈泡發(fā)光，且電壓表示數(shù)為6V，產(chǎn)生這一現(xiàn)象的原因可能是圖1A燈L1處短路 B燈L2處短路C燈L1處斷路 D燈L2處斷路5圖2所示電路中，電源電壓不變，開關S閉合，燈L1和L2都正常發(fā)光，一段時間后，突然其中一燈熄滅，而電流表和電壓表的示數(shù)都不變，出現(xiàn)這一現(xiàn)象的原因可能 圖2AL1短路 BL2短路 CL1斷路 DL2斷路 6由同種材料制成的三根電阻絲，它們的長度關系L1L2L3，橫截面積的關系為S1=S2S3,現(xiàn)將它們串聯(lián)接入電路，關于它們的電阻和通過他們的電流，正確的選項是 AR1R2=R3 ，I1=I2=I3 BR1R2R3， I1=I2I3 CR1R2R3，I1I2I3 DR1R2R3， I1=I2=I3 7在如圖3a所示電路中，當閉合開關后，兩個電壓表指針偏轉均為圖3b所示，那么電阻R1和R2兩端的電壓分別為 圖32A， 1.2VB 6V， 1.2VC， 6VD， 8一個燈泡接在三節(jié)串聯(lián)的鉛蓄電池上，才能正常發(fā)光如果現(xiàn)在用兩個同樣的燈泡串聯(lián)后仍接在這個鉛蓄電池上，那么這兩個燈泡將 A較亮 B較暗 C正常發(fā)光 D燒壞9.如圖4所示.開關S閉合后，將電壓表并聯(lián)在ab處時讀數(shù)是0V；并聯(lián)在bc處時讀數(shù)是6V，整個電路中沒有電流，其電路故障是 圖4A. L1燈絲斷路 2燈絲斷路 C.電池耗盡無電壓 2燈絲短路 10.某同學使用電壓表時，估計待測電路中的電壓應選用03V的量程，但他誤用015V的量程來測量。這樣做的結果是 ( )A.指針擺動角度大，會損壞電壓表 B.指針擺動角度小，會損壞電壓表C.指針擺動角度小，讀數(shù)比擬準確 D.指針擺動角度小，讀數(shù)不夠準確11有甲、乙、丙、丁四根導線，其中甲、乙、丙三根是銅線，丁是鎳鉻合金線。甲、乙導線粗細相同，甲比乙短、乙、丙兩導線長短一樣，乙比丙粗，丙、丁長短粗細相同，那么四根導線按其電阻大小排列是( )甲R乙R丙R丁丁R丙R乙R甲 丙R乙R甲R丁乙R丁R甲R丙12.如圖5所示，當開關S閉合后，電壓表測出的電壓是 圖51兩端的電壓 B.燈L 2兩端的電壓1和L 2兩端的總電壓 D.電源兩端的電壓 13.將兩只滑動變阻器按如圖6所示方法連接，要使這兩只變阻器連入電路的電阻最大，應把滑片P1、P2放在 圖6A滑片P1放在最右端，滑片P2也放在最右端 B滑片P1放在最左端，滑片P2也放在最左端C滑片P1放在最右端，滑片P2放在最左端 D滑片P1放在最左端，滑片P2放在最右端 14為了改變一根導線電阻的大小，以下方法中肯定不能到達目的的是 15.在圖7所示的電路中，處的電表分別是 圖7是電壓表，表是電流表 是電壓表，表是電流表 是電壓表，表是電流表 是電壓表，表是電流表16.質量相等的銅絲和鋁絲，它們的橫截面積相等，那么二者電阻大小比擬( )17以下說法中正確的選項是()A導體中沒有電流通過時，電阻為零B導體中通過的電流越大，其對電流的阻礙作用越大，電阻越大C導體中通過的電流越小，其對電流的阻礙作用越大，電阻越小D導體的電阻跟導體中有無電流和電流的大小無關18當溫度一定時，比擬兩根銅制導線電阻的大小，以下說法中正確的選項是( )A長導線的電阻一定大 B粗細相同，長導線的電阻一定大C細導線的電阻一定大 D粗細相同，短導線的電阻一定大19以下說法正確的選項是 A.電阻表示導體對電流阻礙作用的大小，當導體中無電流通過時，導體就無電阻B.通過導體的電流越小，導體的電阻越大 C.導體兩端的電壓越大，導體的電阻越大20.在圖8所示電路中，電源電壓保持不變，當開關 S1閉合，S2斷開時，電壓表的讀數(shù)是3V；當開關S1斷開，S2閉合時，電壓表的示數(shù)是5V，那么S2斷開時，燈L1和L2兩端的電壓分別為( )圖8A.2V和3V B.3V和2V C.2V和8V D.2V和5V 二填空題(25分)1單位換算：468 M = K，539 mV = kV= V。2.電壓是_的原因，電源的作用是保持_有一定的電壓。V，只有V的電壓對人體是平安的。將8節(jié)干電池串聯(lián)起來組成一個電池組，此電池組的總電壓是_V，給3只相同的燈泡串聯(lián)而成的電路供電，每只燈泡兩端的電壓為_V。4. 電壓表能直接接在電源兩端測量電源電壓，這是因為電壓表的_非常大，不會形成電源_。1、L2燈串聯(lián)的電路電壓的實驗中，電路兩端的總電壓值如圖9甲所示，那么總電壓為_V，燈泡L1的電壓如圖9乙所示，那么燈L1的電壓為_V，燈L2的電壓為_V。圖11圖10圖96.同種材料組成的四根導線，R1R2R3R4，如果它們的長度相等，橫截面積最大的是： ，如果它們的橫截面積相等，那么電阻線的長度最長的是： 。7在圖10中，V表示數(shù)為4.5V，A1、A2兩表示數(shù)分別為、，那么電源由 節(jié)新干電池組成，通過L1、L2的電流分別為 A和 A。8. 將一根粗細均勻的導線均勻拉長，它的電阻變 ，這是因為其 變大， 變小了。9.圖11是一個電表的表盤。也許你沒有學過這種電表的用法，但根據(jù)所學的其他電表的讀數(shù)方法，你也能知道，它的示數(shù)是        ，單位是          。三、作圖、實驗題(共27分)1.(8分)如圖12所示的實驗器材，現(xiàn)用電流表、電壓表分別測出通過燈泡的電流和燈泡兩端的電壓，電路中電流約為，并用變阻器改變小燈泡的電流，要求滑片向右滑動時燈泡變亮。 按要求連接實物圖 畫出相應的電路圖圖12連接電路時開在應處于_狀態(tài)，變阻器的滑片應處于_端A或B。滑片P向左移動時，電流表示數(shù)變_，燈泡亮度_填“變亮、“變暗或“不變假設閉合開關燈不亮，但電壓表示數(shù)約等電源電壓，此時故障可能是_ _ _；如發(fā)現(xiàn)電流表、電壓表的指針均反偏，最簡單的解決方法是_；如移動滑片P發(fā)現(xiàn)兩表示數(shù)均比擬小且不變，那么原因為 _。2.(4分)在圖13中，a、b、c是滑動變阻器的其中三個接線柱，請把滑動變阻器連入電路中的A、B兩點間，使開關S閉合后，當滑動P向左滑時，燈泡亮度增大。圖133.(7分)圖14所示是一個最大阻為9999的電阻箱，如果在一次測量中，電阻箱連入電路的阻值是2417，請在電阻箱的旋盤上標示出這一阻值。圖144.8分在某中學開展“STS教育的科技活動中，小明同學用一泡沫塑料塊，兩節(jié)干電池，兩個相同的小電動機帶自制的螺旋槳，一根鉛筆芯，一只開關，銅導線等，成功地制作了一艘可調速的電動船，并在學校獲獎如圖15是他繪制的該電動船的簡易實物圖試答復:1鉛筆芯在該電路中起到什么作用？ 2根據(jù)電動船的實物圖，畫出它的電路圖圖15螺旋槳螺旋槳 題(8分)1圖16所示，用電壓表分別測量L1兩端的電壓U1、L2兩端的電壓U2以及L1、L2串聯(lián)的總電壓U，請根據(jù)表盤讀數(shù)答復以下問題： SL1L2-315U -315U1 圖16L1兩端的電壓U1是多大？ L2兩端的電壓U2是多大？L1、L2串聯(lián)的總電壓U是多大？ 電源電壓是多大？英文版 easily blame, to prevent the broken window effect. Supervise the leading cadres to play an exemplary role, take the lead in the strict implementation of the < code > and < rule >, lead to safeguard the solemnity and authority of the party discipline, ensure that the party discipline and the laws and regulations for implementation in place. Throughout the discipline in the daily supervision and management, strengthen supervision and inspection, from the thorough investigation of violations of discipline behavior. Strengthen to key areas, key departments and key projects as well as the masses reflect the concentration of the units and departments for supervision. - strengthening supervision, discipline inspection and supervision of cadres to set an example for compliance with the < code > and < rule > is a man must be hexyl, blacksmith needs its own hardware. Discipline inspection organs as the executor of the party discipline, and supervisor of the defenders, for its supervision must be more strictly, discipline inspection and supervision of cadres to firmly establish the awareness of Party Constitution, sense of discipline and rules consciousness, politics loyalty, sense obey. Action speak Ji Ordinance to set an example of the regulations of the rule of law, strengthen supervision and accept the supervision of the firmness and consciousness, do comply with < > and < >. To firmly establish the discipline must first be disciplined, the supervisor will be subject to the supervision of "concept, and consciously safeguard and implement party compasses party, take the lead in practicing" three strict real strict, so loyal, clean, play. To be good at learning, the Constitution and the < code > as morality, politics and brought to fruition; to implement < >, do not want to, dare not, not with disciplinary ruler to supervision; to discipline a ruler, often the control inspection, and consciously in the ideological red line to draw the row Ming Good accumulation is indeed the bottom line, so that the heart has fear, said to have quit, the line has ended. Attached: indifferent to heart, calmly to the table in our life, there are many unpredictable things will happen, some good, some bad things, we cannot control is powerless to stop, but with time, you will find in life sometimes turns out to be not good, some bad things finally turned out to be a good thing, but then we muddy however did not know, this is the life teach us things. 1, life can be complex, can also be simple. Want simple life of precipitation, to have enough time to reflect, to make Become more perfect. Life is the most important thing is not to win, but the struggle; not to have conquered, but to have fought well. 2, the plain is the background of life. Live a plain life, give up on themselves is not a coward, but the wise answers; not disillusioned after the heart, such as ashes, but experience the storm after the enlightenment; not unrewarding perfunctorily, but calm attitude of life of unrestrained self-confidence. Plain living, there is no noise noisy, no earthly troubles, more did not fill in the discontent of desire, some just a calm, a calm. 3, memory of heart will not good things to erase the, life is a When no movie, pain is a beginning, the struggle is a kind of process, death is a kind of ending. Give up this giving up is the helpless, do not give up the abandoned, do not give up this giving up is ignorance, do not give up should not give up is persistent. 4, a thing figured is heaven, think impassability is hell. Since the living, to live better. Sometimes we because of too narrow-minded, too care around the chores and penny wise and pound foolish, not worth the candle. Some things to attract trouble and worry, completely depends on how we look at and deal with it. Don't always take everything back to things, and don't get into a blind alley, don't want to face, don't be narrow-minded. Poke to care, is a kind of open-minded, a free and easy. 5, I am not afraid of others behind me a knife, I afraid to look back and see stab me, is my intention to treat people; I am not afraid of the truth to tell the best friend, I'm afraid he turned to it as a joke to tell don't 6, when we are in a positive frame of mind, you will find many good things; and when we are in a negative state of mind, you will find many depressed things; life happy and worry, all is you of life attitude, optimistic, good luck; loss of sink, Eritrea company. When you are in adversity, may wish to change a point of view to think everything over to the good Think, because good mentality decided the fate of the! 7, people are tired, rest; heart tired, calm. Grow up, mature, this society read. Tired and sad, squat down, to their a hug. Because the world no one can sympathize with you, have mercy on you. You cry, tears is your own; you pain, no one can understand. Then you only tears to smile. 8, each people have youth,Each youth are a story, the life of the world never gets easier, I want what, wish the world all know, as has been the same; now want anything, for fear that others know, or like to lose the same. 9, the heart move, everything in the world is followed by birth, Rangrang, important thing is often the most difficult to open one's mouth, because words will reduce its importance; to let strangers people care about your life in the good things, the original is not easy 10, do not blame, do not laugh at who, also don't envy who. Like a person is a kind of feeling, not like a person is true. The truth is easy to explain, I feel Is unspeakable. The best travel life is that you in a strange place found a long lost touched. 11, happy life not in the bustling in, and in the peace of mind; no matter how many grievances, how uncomfortable, and ultimately to heal themselves or their own, others may got you to comfort, but never know your heart is how wanjianchuanxin. 12, ma'am, like a movie, learn to appreciate, learn to be grateful, learn tolerance, and goodness, helping others. Instead of accusing the society, as into one; and an exception is better to give than to what 13, don't envy him A sum of, don't lose your life and the life, respectively is: the former is a we experienced cannot escape in a day finally will last minute, while the latter is our persistent, we want to cherish the memory of those people and things. 14, learn to smile, learn to strong, the world you know so many people, so many people and you are, you cannot change also can't let everyone like you, so also do not want to do. Life is too short to go crazy to love to go to waste, to chase the dream to regret. 15, when temper, a blessing to go. A wounding elegant people, the key is to control their own emotions. With the mouth is the most stupid behavior. A control negative emotions than a can take a city more powerful water flow slow, language is expensive. People spent two years of time to learn to speak, but to spend a few years time to shut up. That is a kind of ability, that is a kind of wisdom. 16, life is not perfect, sometimes, growth is not a cry, not an eyeful of tears, there is no trace of emotion, there is no gleam of hope, no desire, no action, no static, there is only one kind of downward sinking feeling, sink A murky? 6? 7? 6? 7 sink? 6? 7? 6? 7 toward the bottom of the sink. 17, in some way, do not go, you will not know the other side scenery is beautiful. To you is not good, you do not mind too much, no one has an obligation to you; you learn knowledge, is you have weapons, you can start from scratch, but not unarmed; how do you treat people, does not represent how others treat you, if cannot see through this point, only inviting worry. 18, time is like a sponge in the water, as long as you are willing to squeeze, the total water is still there. Every life, after the ups and downs The best test of live, to life, survival and continuation, do not stop the struggle in the joys and sorrows of life on the road, so that different soul to bear life beat, acceptance of suffering. 19, indifferent to heart, calmly in table, elegant and comfortable life, do not take what is so important. The pursuit will be disappointed; to be alive, you will have trouble. Life is the most afraid of what all want to care about, but also what all grasp is not firm, without scenery, separated populations, such as not to desire, all docked in the fate of the end. Why is too rigid, the natural, to go stay not to live, let go of obsession, revel is 20, if the fate of the broken Hopes of sailing, please don't despair, the coast is still, if the fate of the withered petals of the beautiful, please do not sink, the spring is still, life will always be endless trouble, please don't helpless, because they are still alive, is still a dream, the sun still, we still. Lost, keep memories; to get, must work to; but the most important is good to cherish their own. 21, life, select the complex, is to choose the pain; choose a simple, is choose to be happy. The complex world like aSignificance of pride. Hope is the ornate palace, outside people admiring the magnificent, living in the deep knowledge of living it to pay the price. Simple world as a simple log cabin outside ridiculed shabby, the heart is willing to go live to know the joy. Suffering and joy is their own choice. 22, learn how to use a single powerful heart, let the past be the past, let the future come. Life is really the end of the end of an eagle is flying wings, life is constantly pursuit. Don't miss to regret, don't wait for old just miss. Time to return, seize every moment, again painstakingly again tired also Those struggling to fly. 23, life could not Yimapingchuan, even flat pavement, inevitably there will be a few pieces of roadblocks. Some of the rocks around the past, while others have to move it out. Just move others put the stone is very easy, because the stone from the appearance we can discern; difficult to myself to move away the heart of stone head. Leave time to spend with her, often reflect my heart, so as to remove your heart of stone. 24, everything does not have to be demanding, come to, everything does not have to care about, over the past; failing to do not frown, laugh it laugh. Results Don't demand, do to; life is a simple, calm and peaceful. Always not to choose their own path and regret, life is like a train, the scenery and then the United States will retreat, the passage of time and encounter will eventually drifting further and further away, before is always himself. 25, everyone has a weakness, weakness is true humanity. That has no weakness, a shallow person. That people think there is no weakness, mostly false. Life has shortcomings, there are shortcomings is the real life. That no one regret, or childish or numbness or Self deception. It is in tolerance of weakness and so on to accept, people live happily.Hello, everyone! I am a party member. The title of my speech is: < study and implement the party's two laws, doing practical play highway. 2021 October 18, the Central Committee of the Communist Party of China promulgated the implementation of the < the probity of the Communist Party of China self-discipline criterion > and < Chinese Communist Party discipline and punishment regulations. We Heyuan male passers-by to respond positively to the call of the Central Committee of the party, earnestly organize the study "party two regulations", truly grasp the essence and gist, and in their respective positions, to hold the bottom line of the discipline, build a strong ideological line of defense, with the courage to play, the courage to fight tough and fearless spirit, at the crucial moment well to complete the task, with practical action to test the study and implement effect Because of discipline in the * * * * * * * * * * * story. Here, let me to cast a brick to attract jade, speak about our highway. Highway line section of the road surface transformation project, last year "towards the country seized" will be seized one of the items. To complete this arduous task, as a project management office director Comrade, keep in mind from the Communist Party membership, recognize and identify the "bottom line", strict management, and strict adherence to the quality of the project. He not only set an example, honesty and self-discipline, but also requires the management of all the members of the O.K., do not eat the construction unit one meal, do not accept the construction unit a ceremony. In this way, they didn't really dare to adhere to the principle. No comrade, constantly put on reworking an emergency meeting to Comrade Zhen to speak louder, management tube too strict. Remember in Dongguan Street, 400 meters long cement concrete surface layer, because of various reasons, the smoothness of the poor in the bottom cavity, covering film traces and car imprinting quality problems, * * * inquiries, immediately rushed to the scene to understand and verify the situation, the convening of the management office, the construction units, supervision units, construction units, construction units construction time is tight, the economic loss and other reasons to intercede * unmoved. He said, "now a popular word, to the discipline and rules quite in front, there are no rules Radius, you construction team not accordance with the technical specifications, quality problems, it must be to carry out rectification. Engineering quality responsibility be weightier than Mount Tai, if we manage to this matterPavement quality quantity are placed the matter, we this time to learn two regulations have what use? Still what is the Communist Party? "Finally, in his insisted, the road after rework, to solve these problems. In the construction of the new comrades and the project all the colleagues efforts, after four months of fighting, the project the main project was finally completed and passed inspection. Thousands of miles of ice, thousands of miles Piao, this is a splendid and romantic scene. But snow for the highway, it is a disaster, a serious threat to the traffic safety. This year, a month, a century of cold wave swept from North to south, and the snow blowing to Guangdong, but also to bear the blow To * * * * the highway. In January on the evening of 23, Lianping county city temperatures dropped to minus 2 degrees, a wide range of sudden rain sleet, before and after the provincial S341 line in Jiulianshan Mountain tunnel sections of the road appeared in the snow, lead to the passing vehicles skid, traffic is blocked. In the face of the sudden natural disasters, city and county highway department immediately launched the emergency plan for disaster prevention. As the front line of the main force, Lianping Highway Bureau of all Party members and cadres to remember the Party member responsibility, braving the biting cold wind, the first time rushed to the scene, on the icy pavement of salt disposal. Because the temperature is too low, just melt water immediately freezes, addition to the ice work to increase the difficulty. To ensure In addition to the re organization of the depths of the traffic safety, road people braved the icy put reflective cones and warning signs, endure cold at minus 2,3 of Jiulianshan patrols until one in the morning. Just before dawn, Lianping Highway Bureau personnel on the icy road salt ice melting processing until ten o'clock, ice melting ice success, the road gradually returned to normal traffic. In the cold winter night, which people do not miss the war