Which diesel injection system requires the use of a glow plug?
A) High pressure common rail B) Direct injection
C) Distributor injection D) Indirect injection (IDI)
D
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Which basic principle is one that influences how all HVACR systems work?
A) A decrease in pressure increases the boiling point of liquid, the temperature at which a liquid turns to a gas. B) Pressure affects boiling point and evaporation in an unpredictable way, so it must not be considered in HVACR equipment. C) An increase in pressure can lower the boiling point of a liquid and change the temperature at which it turns to a gas. D) An increase in pressure can increase the boiling point of a liquid, the temperature at which a liquid turns to a gas.
What are the required topics for a ladder training program?
What will be an ideal response?
To use the electronic leak detector, the system must contain at least some refrigerant. If the system is operating with a small leak, plenty of pressurized refrigerant is left in the system. But if the system is void of refrigerant, it must first be pressurized with __________, to which a trace of refrigerant has been added.
A. halogen B. hydrogen C. nitrogen D. oxygen
The symbol for inductance is ____.
A. H B. I C. J D. L