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【单选题】
图所示电路中,电流源发出的功率为 ( )A.
100W
B.
-100W
C.
50W
D.
200W
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举一反三
【单选题】I'm afraid you have no ________ but to come along with us.
A.
decision
B.
interest
C.
choice
D.
selection
【简答题】阅读理解。 You are given many opportunities in life to choose to be a victim or creator. When you choose to be a victim, the world is a cold and difficult place. 'They' did things to you which caused all o...
【单选题】You want to buy a sport car, sir? Yeah, we've got several models for you _________
A.
to choose
B.
for choosing
C.
to choose from
D.
to be chosen from
【单选题】You are going to read an article about the actress Harriet Walter. For questions 8-15, choose the answer (A, B, C or D) which you think fits best according to the text. Acting minus the drama Harriet ...
A.
was tired of answering people's questions about acting.
B.
knew people liked to read about show business gossip.
C.
wanted to entertain people through her writing.
D.
wanted to satisfy people's curiosity about acting in the theatre.
【简答题】判读该连续信号是否为周期信号,若是周期信号求其周期。
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