The arrow in a symbol for a semiconductor device __________
A) Points toward the negative B) Points away from the negative
C) Is attached to the emitter on a transistor D) Both A and C are correct
D
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Vertical slipforming is used primarily for structures with a height greater than _____.
a. 100 feet b. 80 feet c. 50 feet d. 40 feet
The ____ are the framing across the top of a window opening.
A. eaves B. headers C. plates D. awnings
If a technician wanted to accurately measure static pressure in a duct system, how would she place the sensing probe of the magnehelic gauge?
A) Perpendicular to airflow B) At the return grill inlet C) In line with the air flow D) At the supply register outlet
Two common types of compressor are the ____-piston compressor and the sliding-vane compressor.
A. oscillating B. reciprocating C. sliding D. rotating