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【单选题】
重量是重力的大小,是地球对物体的万有引力与该物体随地球自转而引起的作用在物体上的惯性离心力的矢量和().
A.
质量
B.
物体
C.
重量
D.
重力
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B.
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A.
work
B.
career
C.
play
D.
game
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