【正文】 表達式為 （ ） A. F=A+B B. F= BA? C. F= BA? D. F= BA? 浙 02187 電工與電子技術試卷 第 4頁（共 108頁） RS觸發(fā)器不論原來狀態(tài)如何，當輸入端 SD= RD=1時，其輸出端的狀態(tài)為（ ） A. 0 B. 1 C. 保持不變 D. 不能確定 ，設 F1端初始狀態(tài)為 0，則在 A端輸入負脈沖時， F2端的狀態(tài) （ ） A. 不變 B. 不能確定 C. 為 0 D. 為 1 0，已知時鐘脈沖 CP 波形如圖所示，則 Q端的波形為 （ ） 二、填空題 (本大題共 10小題，每小題 1分，共 10分 ) 請在每小題的空格中填上正確答案。 )V C. 230sin (3140t30176。 ，所有電阻均為 1Ω， AB 端的等效電阻為 （ ） A. 1Ω B. C. 2Ω D. 5Ω U為 （ ） A. –22V B. –2V C. 22V D. 2V （火線）之間的電壓均為 380V，則此電源的相電壓為 （ ） A. 220V B. ?2 220V C. 380V D. ?2 380V e的周期為 2ms，最大值為 230V，若 t=0時其瞬時值為 115V，則 e的瞬時值表達式 是 （ ） A. 230sin (314t30176。浙 02187 電工與電子技術試卷 第 1頁（共 108頁） 全國 2020年 4月高等教育自學考試 電工與電子技術試題 課程代碼： 02187 一、單項選擇題 (本大題共 20小題，每小題 2分，共 40分 ) 在每小題列出的四個備選項中只有一個是符合題目要求的 ， 請將其代碼填寫在題后的括號內(nèi)。錯選、多選或未選均無分。 )V B. 230sin (314t+30176。 )V D. 230sin (3140t+30176。錯填、不填均無分。 ，應將電流表與該被測支路 ___________連接。 及其三個極的電流如示意圖所示， 則此三極管的 ? 等于 ___________. 浙 02187 電工與電子技術試卷 第 5頁（共 108頁） ，靜態(tài)電流 IC=2mA時，耦合電容 C2上的直流壓降等于 ___________. ，輸入端 A=B=“ 1”、 C 端懸空，輸出端 F 的邏輯狀態(tài)是___________. ，其基極電流 IB應大于 _________. 三、簡析題 (本大題共 6小題，每小題 5分 ， 共 30分 ) 31．將圖示電路化簡為一個等效電流源電路 。 浙 02187 電工與電子技術試卷 第 6頁（共 108頁） 33．圖示為電動機起 — ?？刂齐娐?。 34．電路如圖示， V為理想二極管。日光燈的等效電路可視為由 R與 L串聯(lián)構成，如圖示。 to implement , do not want to, dare not, not with disciplinary ruler to supervision。 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 unrewarding perfunctorily, but calm attitude of life of unrestrained selfconfidence. 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 narrowminded, too care around the chores and penny wise and pound foolish, not worth the candle. Some things to attract trouble and worry, pletely depends on how we look at and deal with it. Don39。t get into a blind alley, don39。t be narrowminded. Poke to care, is a kind of 浙 02187 電工與電子技術試卷 第 11頁（共 108頁） openminded, 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。m afraid he turned to it as a joke to tell don39。 and when we are in a negative state of mind, you will find many depressed things。 loss of sink, Eritrea pany. 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。 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。s mouth, because words will reduce its 浙 02187 電工與電子技術試卷 第 12頁（共 108頁） importance。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。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。t envy him A sum of, don39。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 浙 02187 電工與電子技術試卷 第 13頁（共 108頁） 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。 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 浙 02187 電工與電子技術試卷 第 14頁（共 108頁） suffering. 19, indifferent to heart, calmly in table, elegant and fortable life, do not take what is so important. The pursuit will be disappointed。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 don39。 to get, must work to。 choose a simple, is choose to be happy. The plex world like a Significance of pride. Hope is the ornate palace, outsi