选择题:No fund has been provided to build a system()readi

题目内容:
No fund has been provided to build a system()reading fingerprints more efficiently.

A.good at
B.keen on
C.concerned for
D.capable of
参考答案:

4.一等直拉杆在两端承受拉力作用,若其一半为钢,另一半为铝,则两段的( )(本题2.0分)A. 应力

4.一等直拉杆在两端承受拉力作用,若其一半为钢,另一半为铝,则两段的( )(本题2.0分)A. 应力相同,变形相同B. 应力相同,变形不同C. 应力不同,变形相

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