?Why is ethylene glycol coolant dangerous to animals?
What will be an ideal response?
It is poisonous
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If a technician needed 5/8" ACR for an installation and was located near only a plumbing supply house, what size and type of pipe should he ask for?
A. 5/8" ACR. B. 1/2" PVC. C. 1/2" ID Copper. D. 5/8" PVC.
All of the following are methods of piston to rod attachment EXCEPT ________
A) Full floating B) Woodruff key C) Free floating D) Press fit to rod
Heat pump A has a SEER rating of 16 and an HSPF rating of 7. Heat pump B has a SEER rating of 14 and an HSPF rating of 9. Which heat pump cools more efficiently?
A) Heat pump A B) Heat pump B C) They are about the same heating efficiency by the time both the SEER and HSPF are considered. D) Neither the SEER nor the HSPF can determine which heat pump heats more efficiently.
____________________________ opens at approximately 400 +/- 50 psi differential between high and low side pressures for R-22, and 500 to 625 psi differential for R-410A.
Fill in the blank(s) with the appropriate word(s).