On a time temperature defrost control, what determines the amount of time before the defrost cycle starts?
A) the outdoor temperature B) the coil pressure drop
C) the coil temperature D) the operating time
D
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A ____ is an identifying mark of a specific testing laboratory.
a. legend b. label c. symbol d. letter
Technician A says that calibration codes may be located on the PCM housing. Technician B says that some calibration codes must be accessed by a scan tool. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B
The compound gauge reads:
A) Only pressures below atmospheric pressure. B) Pressures above and below atmospheric pressure. C) Only pressures above atmospheric pressure. D) The pressures on both the low side and the high side of the system.
Oil residue in an air tool can explode if it combines with _____
a. nitrogen b. fuel gas c. oxygen d. carbon monoxide