Author Question: Before any repairs can be made to a gas compressor, all the energy sources must be ________. A) ... (Read 34 times)

future617RT · **on:** Jul 24, 2018

Before any repairs can be made to a gas compressor, all the energy sources must be ________.

A) relieved B) isolated C) shut down D) purged

Question 2

The main divisions of the HVACR industry include:

A) Air conditioning, heating, or refrigerating industrial building structures.
B) Heating and cooling residential building structures.
C) Cooling, heating, ventilating, or refrigerating specific spaces.
D) Ventilating and cooling commercial building structures.