题目内容
(请给出正确答案)
[单选题]
如果不超过弹性限度的话,使物体改变其形状的形变力与变化量成正比。 When a body is caused to change its shape, the distorting force is proportional to the amount of the change, __________ the elastic limit is not exceeded.
A.provided
B.as
C.while
D.before
提问人:网友wlg9889
发布时间:2022-01-07