Parallel lines should be drawn what to each other?
A. right angle
B. 30 degree angle
C. straight
D. parallel
Answer: D
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This is used to retain parts in a fixed position to keep parts aligned.
a. threaded insert b. nut c. washer d. dowel pin
Why should caution be exercised when replacing a low-efficiency air filter with a higher-efficiency air filter?
A) It is possible for air that is too clean to increase the occupant's sensitivity to allergens. B) The lower pressure drop across high-efficiency filters can cause the blower motor to draw high amps. C) Higher-efficiency filters have a higher pressure drop, which can cause poor airflow. D) Air-conditioning coils depend on a certain amount of small particulates to help moisture precipitate out of the air.
An alternating current of 60 hertz changes direction 100 times per second.
Answer the following statement true (T) or false (F)
Simplify the expression: (4M2P)2.
Fill in the blank(s) with the appropriate word(s).