The abbreviation for square is ____________________.
Fill in the blank(s) with the appropriate word(s).
SQ
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The United States produces about ____________________% of the world's wheat
Fill in the blank(s) with correct word
An acute angle has _____
a. less than 90 degrees b. more than 90 degrees c. exactly 180 degrees (a flat line) d. more than 90 degrees, but less than 180 degrees
How does a pressure-time-temperature defrost system measure frost?
A) The system has a timer control triggered by pressure drop. B) The system has a reversing valve that controls the defrost thermostat. C) The system has a timing circuit that controls the defrost thermostat. D) The system has a differential airflow pressure switch.
The crankcase pressure regulating valve is _____
a. used in systems with multiple evaporators that operate at different temperatures to control the evaporator temperatures b. used to control the maximum pressure at the compressor suction line in order to protect the compressor motor from overload c. used to control system capacity in addition to limiting evaporator temperature d. adjusted for the minimum pressure specified by the manufacturer