The bank is reported in the local newspa 发布时间:2017-04-14 00:00 │ 来源:www.tikuol.com 题型:完形填空 问题: The bank is reported in the local newspaper to ________(rob) in broad daylight yesterday.
题型:完形填空 如图所示,两个等大的水平力F分别作用在物体B、C上。物体A、B、C都处于静止状态。各接触面与水平地面平行。物体A、C间的摩擦力大小为f1,物体B、C间的摩擦力大小为f2,物体C与地面间的摩擦力大小为f3,则[ ]A. B. C. D. 查看答案