Airflow switches are generally used to ensure that ____ before the compressor is permitted to start.
a. a pre-set temperature has been reached
b. air has reached saturation point
c. a pre-set pressure has been reached
d. air is moving across the evaporator coil
d. air is moving across the evaporator coil
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Pipe layouts are shown through the use of single-line and double-line drawings.
Answer the following statement true (T) or false (F)
The normal operating temperature (coolant temperature) of an engine equipped with a 195°F thermostat is ________.
A) 175°F to 195°F B) 175°F to 215°F C) 185°F to 205°F D) 195°F to 215°F
Jonah built a 3-foot-wide L-shaped walk from the drive to the 8- by 6-foot front entrance (Figure 12-1). He poured the area in concrete 4inches deep.
a. How many cubic yards of concrete were needed for the walk?
b. How many cubic yards of concrete were needed for the job?
c. At $65.50 per cubic yard, what did the concrete cost?
Which part of the camera focuses the incoming light directly on the CCD or CMOS elements of the camera?
A. Imaging device B. Processor C. Lens D. Light source