【单选题】
物体加速度的方向跟合外力的方向相同，物体的加速度跟物体所受的合外力成正比、跟___
A. 物体的质量成正比
B. 物体的质量成反比
C. 物体的质量不相关
D. 物质的位置不相关
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答案
B
解析
暂无解析
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落在高压线上的鸟儿不会触电死亡，这是因为___
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【单选题】
(1)Whieh of the following descriptions about the characteristics of physiology is wrong？___
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【单选题】
(2) Which of the following are specialized in producing force and movement?___
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【单选题】
(3)The fluid environment surrounding each cell is called the___
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【单选题】
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【单选题】
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【单选题】
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【单选题】
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【单选题】
8)The breakdown of large molecules to smaller ones is called___
A. respiration
B. anabolism
C. catabolism
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