单选题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.AmeasuredBrecordedCtransferredDcontrolled
单选题
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
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