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【单选题】
根据电动机的主回路电流的大小，利用( )等电器来控制电动机的工作状态称为电流控制原则。A.
电流继电器
B.
时间继电器
C.
位置开关
D.
速度继电器
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【单选题】Without friends, he felt ______ in the city he had just arrived in.
A.
alone
B.
lone
C.
lonely
D.
lonesome
【单选题】圆轴受集度为m。的均布扭转力偶矩作用，如图所示。则该轴的刚度条件有四种答案，正确的是( )。
A.
m q /(GI p )≤[φ']
B.
m q l/(GI p )≤[φ']
C.
m q l/(2GI p )≤[φ']
D.
2m q l/(GI p )≤[φ']
【单选题】Without friends, he felt ______ in the city he had just arrived in.
A.
alone
B.
lonely
C.
independent
【单选题】Without friends, he felt __________ in the city he had just arrived in.
A.
preferable
B.
along
C.
lonely
D.
alone
【简答题】空心圆轴受集度为mq的均布扭转力偶矩，如图所示，则该轴的刚度条件有四种答案，其中正确的是___________
【单选题】Without friends, he felt ______ in the city he had just arrived in.
A.
happiness
B.
lonely
C.
independent
【简答题】Without friends, he felt in the city he had just arrived in. (lonely)A. lonely
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