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【单选题】
恒转矩负载下,他(并)励电动机最好的机械特性是——。A.
调压调速
B.
转子串电阻调速
C.
转子串电感调速
D.
定子调磁场调速
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反馈参考答案：
举一反三
【简答题】求对合方程，它的两对对应元素的参数为： (1)1与 ；0与2； (2)2与2；1与4； (3)2与－1；－2与∞．
【单选题】What is not the advantage of exercises?
A.
Exercise improves your appearance and your health.
B.
Exercise can get your body moving.
C.
Exercise helps to reduce the risk of some diseases.
D.
All of the above are wrong.
【单选题】What would a person typically do at the end of the exercises?
A.
Move gently.
B.
Rest or meditation.
C.
Do slow exercises.
D.
Take deep breath.
【单选题】According to the conversation, what is one problem with arm exercises?
A.
They don't get rid of flabby arms.
B.
They can damage arm muscles.
C.
They are not acceptable to most people.
D.
They can raise one's blood pressure.
【单选题】---____ do you study for a math test? ---I study math ____ lots of exercises.
A.
What, by doing
B.
How, by doing
C.
How, doing
D.
What, doing
【单选题】企业2015年11月份完成了生产设备的采购,会计人员在2016年1月份才入账,该事项违背的会计信息质量要求是()要求。
A.
相关性
B.
可靠性
C.
谨慎性
D.
及时性
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