Movement of the diaphragm or bellows is （） by a linkage to a needle or pointer display to indicate the differential pressure between two sides of the diaphragm or bellows.<br>A:measured<br>B:recorded<br>C:transferred<br>D:controlled

Movement of the diaphragm or bellows is （） by a linkage to a needle or pointer display to indicate the differential pressure between two sides of the diaphragm or bellows.
A:measured
B:recorded
C:transferred
D:controlled

出自：海船船员证

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