找出句子中的所有谓语动词The Internet is not the only tool to defeat poverty,but it has enormous potential.
A. is
B. defeat
C. is 和has
D. is 和defeat 和has
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找出句子中的所有谓语动词But keeping sensitive information on these devices is increasing a requirement of normal life
A. is increasing
B. keeping
C. requirement
D. is increasing 和keeping
跨度较短的工字形截面梁,在横力弯曲条件下,危险点不可能发生在( )。
A.上下翼缘的最外侧
B.截面的中性轴上
C.截面的形心
D.翼缘与腹板的交接处
几何图形对于其对称轴的()。
A.静矩和惯性矩均为零
B.静矩和惯性矩均不为零
C.静矩不为零,惯性矩为零
D.静矩为零,惯性矩不为零
为增加正方形截面梁的抗弯截面系数,提高其强度,应使中性轴通过正方形的对角线。
A. 对
B. 错