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【简答题】
物体只在 作用下从 开始下落的运动叫自由落体运动.
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皮皮学刷刷变学霸
举一反三
【简答题】How did he make his way out in the end? （ ）
【单选题】三相异步电动机在额定电压和额定频率下运行时,若负载发生变化,则旋转磁场每极的磁通( )。
A.
基本保持不变
B.
随负载增大而增大
C.
随负载增大而减小
D.
其余选项都不对
【简答题】三相异步电动机在额定电压和额定频率下运行时，若负载发生变化，则旋转磁场每极的磁通()。 (A) 基本保持不变 (B) 随负载增大而增大 (C) 随负载增大而减小 (D) 无法确定
【单选题】How did the man solve his problem?
A.
He went to the administrator's office to ask the way.
B.
He just found the way accidentally.
C.
His girlfriend knew how to get there.
D.
A female student showed him because she was going the same way.
【简答题】How did Norman Cousins react, or respond, to his diagnosis?
【简答题】How much did the farmer pay for his visit? He paid ______.
【单选题】三相异步电动机在额定电压和额定频率下运行时，若负载发生变化，则旋转磁场每极的磁通( )。
A.
基本保持不变
B.
随负载增大而增大
C.
随负载增大而减小
D.
无法确定
【简答题】How did the man feel about his work?
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