液（水）压试验，碳素钢16MR材质的介质温度（）5℃，而低合金钢_爱下问搜题

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问题单项选择题

液（水）压试验，碳素钢16MR材质的介质温度（）5℃，而低合金钢不低于15℃。

A、大于

B、小于

C、等于

答案

参考答案：A

选择题

Robert is said _______ abroad, but I don't know what country he studied in.

A. to be studying
B. to study
C. to have studied
D. to have been studying

问答题

试比较抗日民族统一战线与国民大革命时期的革命统一战线。