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【简答题】
全波(桥式)整流电路中,如果输入电压有效值为U2,负载电阻为RL,则负载上电压的平均值为( )U2。
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【简答题】阅读理解。 Koeler took special notice of the tall woman who was nicely dressed, but she was wearing ugly, thick-soled (厚底) shoes. Now the woman was taken to a room for questioning. There it was found that ...
【单选题】________ in a red dress, she was easy to _______ in the big crowd.
A.
Being dressed; pick out
B.
Dressed; pick out
C.
Dressed; be picked out
D.
Having dressed; pick out
【单选题】Judy_______ like a queen in her birthday party.
A.
dressed up
B.
look
C.
act
D.
dressed in
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