When changing the superheat setting on a TXV, _____.
a. the system must be shut down
b. the system must be in operation
c. completely remove the packing nut from the adjusting stem
d. close off the equalizer line until the adjustments are complete
b. the system must be in operation
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For ease of removal when performing maintenance, sewage pumps should be connected to inlet and outlet piping with flanges or _____.
a. unions b. flexible couplings c. tees d. quick disconnects
Some computer room rack cooling system evaporator coils are fed with _____.
a. liquid refrigerant at a low pressure and always above the dew point of the room b. liquid refrigerant at a low pressure and always below the dew point of the room c. refrigerant vapor at a high pressure and always above the dew point d. refrigerant vapor at a high pressure and always below the dew point
All employees who are exposed to hazardous conditions such as falling objects, electrical hazards, or burns are required to wear ___________________________________ on the job site.
Fill in the blank(s) with the appropriate word(s).
OnStar uses ________
A) Automatic airbag deployment notification B) Digital cellular phone service C) GPS information D) All of the above