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问题:标准节流装置的取压方式主要有()A、损失取压B、法兰取压C、理论取压D、角接取压E、任意取压...
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问题:已知当地大气压Pb,表压力读数为Pe,则绝对压力P等于()。A、P=Pb-PeB、P=Pe-PbC、P=Pb+Pe...
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