How do refillable and recovery cylinders differ?
A) The size of the cylinder B) The color of the cylinder
C) The shape of the cylinder D) The material in the cylinder
A
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Technician A says that the "W" in SAE 10W-40 stands for "weight." Technician B says that SA, or "nondetergent," oil should not be used in late-model automobiles. Who is right?
A. ?Technician A only B. ?Technician B only C. ?Both A and B D. ?Neither A nor B
An efficient and trouble-free air conditioning system installation is more likely if the installation starts:
A) By pulling the refrigerant line set. B) By cutting holes to rough in the ductwork. C) In the afternoon. D) With planning the installation.
What color surface temperature can be read most accurately with an infrared thermometer?
A) Light-colored, dull surfaces are best because they will radiate infrared light instead of absorbing it. B) The closest to a flat black C) Shiny surfaces work best because they reflect infrared light better. D) Infrared thermometers are not affected by the color of the surface being measured.
A(n) ____________________ line indicates that two switches are mechanically connected.
Fill in the blank(s) with the appropriate word(s).