The primary function of an expansion device is to ____.
A. produce a reduction in the pressure on the liquid refrigerant
B. regulate the flow of refrigerant into the evaporator
C. lower the boiling point of the refrigerant far enough below the temperature of the load to get the needed heat transfer rate
D. all of the above
Answer: D
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When a length is not specified on the welding symbol, the fillet weld is assumed to be ____________________.
Fill in the blank(s) with the appropriate word(s).
A(n) ____ may be used to prohibit the contractor from subcontracting work to nonunion firms for a particular labor classification.
A. union earmark B. journeyman stipulation C. subcontractor clause D. dual gate provision
The study of how specialized plant organs function and the complex chemical processes that permit
the plant to live, grow, and reproduce is called ____________________.
Fill in the blank(s) with the appropriate word(s).The block that hosts the cylinder of a four-stroke cycle engine is usually made of _____
A) copper? B) steel? C) aluminum? D) alloy