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【单选题】
V带传动工作通过（）接触摩擦，在相同条件下其承载能力远大于平带传动。A.
弧形面
B.
楔形侧面
C.
平面
D.
曲面
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举一反三
【简答题】电路如图2—16(a)所示，已知E=10 V、IS=1 A，R1=10Ω、R2=R3=5Ω，试用叠加定理求流过R2的电流I2和理想电流源IS两端的电压US。
【简答题】Don't forget to ________ the equipment before setting up the experiment. A) try in B) try on C) try for D) try out
【单选题】What is wrong with making a film by setting up a camera before the stage?
A.
Fewer and fewer people will go to the theatre.
B.
The audience cannot see what is going on on the stage.
C.
The scene cannot be changed from time to time.
D.
The powerful camera cannot be made good use of.
【简答题】What is wrong with a film by setting up a camera before the stage? [A] Fewer and fewer people will go to the theatre. [B] The audience cannot see what is going on on the stage. [C] The scene ca...
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