In a laser printer, the laser beam is initiated and directed toward the octagonal mirror called the ____ mirror.

A. Rotational
B. Scanning
C. Laser
D. Writing


Answer: B. Scanning

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The ____ is defined as one coulomb per second.

a. amp b. watt c. volt d. ohm

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How many steps are required to calculate the heat necessary to change 10 lb of ice at -20°F to steam at 250°F?

A) One B) Three C) Two D) Six

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Besides improving efficiency, insulating the suction line:

A) Serves as a backup sealing system to prevent refrigerant loss. B) Reduces mechanical vibrations set up by the compressor. C) Prevents stray electrical current from traveling down the pipe. D) Prevents moisture from condensing on the line.

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____ is a casting method using wax.

A. Investment casting B. Die casting C. Sand casting D. Centrifugal casting E. none of the above

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