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【判断题】
焓是状态参数,对于闭口系统,其没有物理意义
A.
正确
B.
错误
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【单选题】图示正弦交流电路中,若ab端钮处的开路电压【图片】V,则电流源【图片】等于()【图片】
A.
B.
2∠0°A
C.
D.
【简答题】The World’s Leading Inventor: A. He patented over _______ inventions which changed our way of living. B. He was one of the earliest inventors of the _______. C. His invention of the phonograph was joi...
【判断题】在PC机中,处理器、微处理器和中央处理器是完全等同的概念。
A.
正确
B.
错误
【简答题】完形填空。 1 way of learning English is by 2 it, talking as much as one 3 . Sometimes you will get your words mixed up (混淆) and people will not understand you. But if you 4 your sense of humour, you can al...
【单选题】图示正弦交流电路中,若 V, A,则电压源供出的有功功率P为 答 ( )
A.
W
B.
W
C.
W
D.
W
【简答题】“南陈北李,相约建党”中的“陈”和“李”指的是谁?
【单选题】图示正弦交流电路中,若 V, A,则电压源 供出的功率P等于 答 ( )
A.
10W
B.
0W
C.
20W
D.
40W
【简答题】A happy couple and an unhappy one may NOT differ in the way of __________. [A] showing one's affection [B] expressing one's admiration [C] caring for each other [D] talking about their lives
【简答题】对下面程序描述正确的是( ) delete from user where id in (1,2)A. 删除id=2的数据 B. 删除id=3的数据 C. 删除id=2或id=3的数据 D. 删除id不是2或3的数据
【单选题】“南陈北李,相约建党”,这里的“李”指的是( )
A.
李达
B.
李汉俊
C.
李大钊
D.
李立三
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