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【简答题】
用弹簧测力计沿水平方向拉着一个木块做匀速直线运动时,弹簧测力计的示数为12 N,则木块所受的合力为_________N。若将拉力增大,当弹簧测力计读数为20 N时,木块受到的摩擦力为__________N。
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Find
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Found
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B.
也称作“泰勒制”
C.
主张所有权与管理权相分离
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正确
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room
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a room
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