A(n) ____________________ or ____________________ is a wood or metal beam with legs used to
temporarily support materials.
Fill in the blank(s) with the appropriate word(s).
sawhorse, trestle
trestle, sawhorse
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Most electrically driven constant-speed machines operate at speeds below ____ rpm.
a. 1800 b. 2000 c. 2200 d. 2400
Technician A says that it is likely that biodiesel will replace petroleum base diesel fuel within the next decade because of its lower emissions. Technician B says that all ASTM 6751 biodiesel has a yellow tint. Who is correct?
A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B
When evacuating a system, the technician should use __________ or __________ hoses as synthetic hoses are __________ (they allow gases to penetrate)
What will be an ideal response?
In a semi-hermetic compressor, _____
a. the compressor and drive motor share a common housing b. the drive motor is mounted outside of the compressor housing c. the pistons can easily be accessed and serviced in the field d. any component failure can be addressed without replacing the compressor