题目内容
(请给出正确答案)
[主观题]
单位弹性(Unitary elasticity)
答案
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第2题
A、factor
B、false
C、evident
D、elastic
第3题
Elastic strain()
A.is strain thatpermanently remains,when the lvadcausing it is removed
B.occurs below the proportional limit
C.is also known as permammt deformation
D.none of the above
第4题
The author compares cells with water balloons in order to ______.
A.make you think of summer
B.help you visualize the cells
C.show how rubber is elastic
D.show how many shapes cells can have