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问题 单项选择题

光滑面对物体的约束反力作用在接触点处，其方向沿接触面的公法线（）。

A、指向受力物体，为压力

B、指向受力物体，为拉力

C、背离受力物体，为拉力

D、背离受力物体，为压力

答案

参考答案：A

单项选择题

根据《水利工程建设项目招标投标管理规定》（水利部令第14号），水利工程建设项目招标分为（）。

A．公开招标、邀请招标和议标

B．公开招标和议标

C．邀请招标和议标

D．公开招标和邀请招标
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单项选择题

Aristotle was one of those who could found a civilization, and while he thought of education as both a social value and an end in itself, he ascribed its chief importance (21) what might be considered a third basic concept of education: to train the mind to think, (22) what it is thinking about. The key is not (23) it knows but how it (24) any new fact or argument. "An educated man," Aristotle wrote in On the Parts of Animals, "should be able to (25) a fair offhand judgment as to the goodness or badness of the method used by a professor in his exposition. To be (26) is in fact to be able to do this."
The Aristotle view of education as a (27) has become the conventionally worthy answer today (28) college presidents and other academic leaders are asked what an education should be. An educated man, says Harvard President Bok, (29) a deep breath, must have a "curiosity in (30) the unfamiliar and unexpected, an open-mindedness in entertaining opposing points of view, (31) for the ambiguity that surrounds so many important issues, and a willingness to make the best decision he can in the fact of uncertainty and doubt."
This is an approach that appears to (32) more importance to the process of learning (33) to the substance of what is learned. The very old notion of the generalist who could comprehend all subjects has (34) been an impossibility. To make matters (35) more difficult, the fields of knowledge keep changing.

A. regardless ofB. in terms of C. regarding to D. in view of
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