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【单选题】
异步电动机在______运行时转子感应电流的频率最低;异步电动机在______运行时转子A.
电流频率最高。
B.
起动/空载
C.
空载/
D.
额定/起动
E.
/额定
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【简答题】计算11001100B-11110111B,请问结果是 ,其中CF= ,PF= ,AF= ,ZF= ,SF= 。
【简答题】A．It is unclear from the passage. B．She is going to break up with her boyfriend. C．She doesn't like his parents very much. D．She doesn't know how to get along with her boyfriend.
【单选题】How would you break up a dog fight?
A.
Hit the aggressive dog as hard as you can.
B.
Stand between the two dogs shouting loudly.
C.
Put a broom between the two dogs to keep them apart.
【简答题】11110111 B=( )D=( )H ( 6DF7 ) 16 = ( ) 2 1AD H=( )B=( )D
【简答题】一带符号数的8位补码为11110111B,它所表示的真值为( )D。
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