Who can legally refill a DOT 39 nonrefillable cylinder?
A) Nobody B) Only the refrigerant manufacturer
C) Only the cylinder manufacturer D) Only certified technicians
A
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Engineering drawings require the use of single-stroke ____ lettering.
A. serif B. proportional C. monospaced D. gothic
When calcareous soils are tested with dilute hydrochloric acid, do they fizz as a result of the carbon
dioxide being released?
Indicate by YES (Y) or NO (N).The output of an oil furnace ignition transformer can be tested
A) With a special high voltage probe that reduces the voltage to a level a standard meter can read B) Using the microamp scale on a multi-meter C) Using a volt meter that can read 1000 volts DC D) Using a volt meter that can read 1000 volts AC
One 2-wire section of a 24-volt watchman clock signal system is operated through a 450-foot length of lead covered cable drawing 2 amps. The size of the conductor is number 18, and the diameter is 40.3 mils. What is the resistance of one conductor? Express the answer to the nearer whole number.
Fill in the blank(s) with the appropriate word(s).