试题与答案

液体的压力有()两种。A、相对压力 B、绝对压力 C、公称压力 D、额定压力

题型:多项选择题

题目:

液体的压力有()两种。

A、相对压力

B、绝对压力

C、公称压力

D、额定压力

答案:

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