If a vacuum has been pulled on a system and is a leak, the vacuum gauge will A. begin to rise. B. stay where it was when the vacuum pump S. A digital micron gauge A. is used to measure a vacuum in a...

If a vacuum has been pulled on a system and is a leak, the vacuum gauge will A. begin to rise. B. stay where it was when the vacuum pump S. A digital micron gauge

A. is used to measure a vacuum in a refrigeration

B. is used to measure atmospheric pressure.

C. is used to measure the pressure in a refrigera- valved off C. begin to fall

D. vibrate back and forth. tion system under normal operating conditions at the compressor discharge line. D, is uned to measure atmospheric pressure at sea