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【单选题】
单相半波整流输出直流电机转速在接入稳压电容后,转速可以提高多少?A.
20rpm
B.
200rpm
C.
2000rpm
D.
0
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举一反三
【单选题】The ruling class had long been ________ to the suffering of the peasants, which led to the revolution.
A.
opposed
B.
indifferent
C.
contrary
D.
sensitive
【单选题】在RLC 串联正弦交流电路中,当端电压与电流同相时,频率与参数的关系满足 ( )
A.
增大电阻R,就可改变电路的谐振频率
B.
调小电容,电路的感性增强
C.
调大电容,电路的性质不变
D.
调小电感,电路的容性增强
【单选题】The new ruling class had built a cultural barrier against him by building their French against his own language.
A.
The new ruling class used their French to against his language, thus they build a cultural barrier.
B.
The new ruling class used French to fight against Saxon peasants'English, thus it made it difficult for the peasants to accept the language and the culture of the rulers.
C.
The new ruling class used French to fight against Saxon peasants'English, thus it made it difficult for the French to accept the language and the culture of the rulers.
【判断题】The ruling class had long been indifferent to the sufferings of the peasants,which led to leave
A.
正确
B.
错误
【简答题】The new ruling class had built a cultural barrier...his own language. (Para. 11)
【简答题】The new ruling class had built a cultural barrier against him by building their French against his own language.
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