A、<span style="font-size:16px;font-family: 宋体">U</span><span style="font-size:16px;font-family:宋体">形管压力计</span>
B、<span style="font-size:16px;font-family: 宋体">U</span><span style="font-size:16px;font-family:宋体">形管粘度计</span>
C、<span style="font-size:16px;font-family:宋体">孔板流量计</span>
D、<span style="font-size:16px;font-family:宋体">温度计</span>
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