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【判断题】
【图片】图示RLC串联电路，开关S闭合前后，电路有功功率P未发生改变A.
正确
B.
错误
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【单选题】She was depressed and felt totally __________ about the future.
A.
hopeful
B.
hopeless
C.
anxious
D.
unfortunate
【判断题】Since a by-product is a saleable item it should be separately costed in the process account, and should absorb some of the process costs
A.
正确
B.
错误
【单选题】听力原文：Man: I'm afraid we have to change the date of the next marketing meeting. Unfortunately, the US manager can't make June the fifteenth now. Woman: So when are you suggesting? Man: Well, could you ...
A.
B.
C.
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