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问题 单项选择题

梁腹板的高厚比80＜h0/tw＜170时，应设置（）。

A.横向加劲

B.纵向加劲肋

C.纵横向加劲肋

D.短加劲肋

答案

参考答案：A

单项选择题

Questions 24-30


·Look at the questions for this part.
·You will hear a passage about "Health and Fitness ". You will listen to it twice.
·For Questions 24-30, indicate which of the alternatives A, B, or C is the most appropriate response.
·Mark one letter A, B, or C on the Answer Sheet.

Which of the following is NOT a reason why Americans are consuming more and more fast food at restaurants

A．Fast food is often the cheapest.

B．Fast food is believed to be nutritious.

C．Americans simply like fast foo
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问答题 简答题

为什么工业废水处理前，设置均合调节池？
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