Bourdon Tube is probably the most commonly used （） measuring instrument.<br>A:the absolute pressure<br>B:the gauge pressure<br>C:the vacuum pressure<br>D:the differential pressure

Bourdon Tube is probably the most commonly used （） measuring instrument.
A:the absolute pressure
B:the gauge pressure
C:the vacuum pressure
D:the differential pressure

出自：海船船员证

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