安全阀定压为正常工作压力的（）倍。A.1.5 B.1.25 C.1.4 D.1.1

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问题单项选择题

安全阀定压为正常工作压力的（）倍。

A.1.5

B.1.25

C.1.4

D.1.1

答案

参考答案：B

解答题

希望小学计划招收一年级新生80人，实际招收了120人，实际比计划增加招生百分之几？

猜谜题，问答题

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