作业帮_____ you move matter,work is done.选哪个,为什么?
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_____ you move matter,work is done.选哪个,为什么?
unless
in case
since
after
unless
in case
since
after
答案是In case 如果.
Matter：物质
in case you move matter,work is done.
句意：如果你移动了物质,你就对该物质做了功.
省译法：物质运动,做功产生.
注：此处的做功就是物理上的那个做功,经典力学的定义：当一个力作用在物体上,并使物体在力的方向上通过了一段距离,力学中就说这个力对物体做了功.
其他例子：
Matter must move, or no work is done.
物质必须运动,否则就没有做功.
Matter：物质
in case you move matter,work is done.
句意：如果你移动了物质,你就对该物质做了功.
省译法：物质运动,做功产生.
注：此处的做功就是物理上的那个做功,经典力学的定义：当一个力作用在物体上,并使物体在力的方向上通过了一段距离,力学中就说这个力对物体做了功.
其他例子：
Matter must move, or no work is done.
物质必须运动,否则就没有做功.
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