Before flushing any system, all in-line devices, such as soft-seated control valves and magnetic flowmeters,
must be _____.
a. calibrated
b. opened
c. closed
d. removed
d
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Converting mechanical energy into heat energy is accomplished by the:
A. Cooling system B. Brake system C. Suspension system D. Ignition system
A cover crop is a close-growing crop planted to temporarily protect the soil surface
Indicate whether the statement is true or false.An accumulator at the outlet of the evaporator is there to ____.
A. accumulate moisture in the system B. provide for the peak amount of active liquid refrigerant in the evaporator C. provide space for refrigerant vapor to collect D. accumulate foreign particles and other contaminants
The universal chuck has:
A) Four jaws, each of which can move without affecting the position of the others B) A special adjusting system that makes the jaws center round work more accurately C) Two, three or six jaws that all move in or out an equal distance D) Three jaws that move independently of each other