Why do solenoid-type valves pose a problem for some types of burners?
A) Solenoids open and close too quickly.
B) Solenoids open and close too slowly.
C) Solenoids create too much pressure when closing.
D) Solenoids' seal is not strong.
A
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Water does not require estimating as a material.
Answer the following statement true (T) or false (F)
In the PCV system, crankcase vapors are recycled to the:
A. exhaust system. B. air cleaner housing.. C. oil-breather cap. D. intake manifold.
The unit for the measure of energy in the SI system of units is
A) Watt. B) calorie. C) Joule. D) Btu.
Which of the following should be at least 18" in length when used to connect a junction box mounted above a suspended ceiling to a fixture installed in a suspended ceiling?
a. Flange hanger b. T-bar clip c. Free conductor d. Fixture whip