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【单选题】
三相笼型异步电动机电源反接制动时需要在（）中串入限流电阻。A.
控制回路
B.
定子回路
C.
转子回路
D.
直流回路
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】According to the announcement, the passengers could take off their seat belt when ______.
A.
they wanted to go to the washroom
B.
the seat belt warning light was turned off
C.
the seat belt warning light was turned on
D.
they wanted to look after their children
【单选题】When could you open your seat belt?
A.
The plane is taking off.
B.
The plane is landing.
C.
The seat belt sign is on.
D.
The seat belt sign is off.
【简答题】2017 年10月18日,在十九大报告中指出,,我国经济已由高速增长阶段转向 发展阶段,正处在转变发展方式、优化经济结构、转换增长动力的攻关期,建设现代化经济体系是跨越关口的迫切要求和我国发展的战略目标。
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