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机械传动中应用最广的带传动是( )传动。
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普通V带是靠带的( )与带轮之间的摩擦力来传递运动和动力的。
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Mary is the only one of those students who _____ pets.
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She worked so hard _____ she won the first price in the math competition.
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How many staffs _____ in the your company?
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Your father must have arrived in Paris, _____ ?
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The _____ we become, the more modest we should be.
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She went out without _____ good-bye to us.
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— I heard your manager had gone to Beijing on business. — Yes, And he _____ in three weeks.
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— Who do you think will be the winner of the school volleyball match this term? — I am sure the gold medal will _____ our class.
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三极管输出特性曲线可分为三个区,为( )。
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放大器三种组态都有。( )
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对负反馈放大器,下列说法中错误的一种是
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当稳压管正常稳压工作时,其两端施加的电压特点为
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电路简单,负载电压较高,电压纹波较小,输出特性较差,适用于负载变动不大,输出直流电压较高的场合的滤波电路是( )
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串联型稳压电路中的调整管是什么组态( )
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You’re driving too fast. Can you drive _____ ?
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Tom was doing his homework in the room _____ he heard someone calling his name.
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They made him _____ king.
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Where’s Damon Salvatore?We are all here _____ him. He is at home now because of the illness.
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