under heavy loads
during hot gas defrost
under light loads
during starting conditions
第1题：
If a refrigeration system were short of refrigerant, the condition would result in
A.continuous running of the compressor
B.high suction pressure
C.high discharge pressure
D.short cycling of the compressor on the water failure switch
第2题：
If the suction pressure for an operating refrigeration compressor is below normal, the cause may be ______.
A.an excess of liquid refrigerant
B.the expansion valve overfeeding
C.a fouled compressor suction strainer
D.the compressor short cycling
第3题：
(c) State one advantage to a business of keeping its working capital cycle as short as possible.
(2 Marks)
第4题：
短生活史型（short life-cycle）
第5题：
Syllables are short when they are stressed.（）
第6题：
A. The memory is failing.
B. The CPU is overheating.
C. The hard drive is not attached properly.
D. The operating system is not installed.
第7题：
第8题：
When the prime movers of two paralleled generators are equipped with mechanical-hydraulic governors, and are operating within their designed range, the unit with the least amount of speed droop will .
A.pick up more of any increase in load
B.pick up less of any increase in load
C.share an equal amount of any increase in load
D.drop an equal amount of any decrease in load
第9题：
When Bob, a technician, powers up a desktop PC, the unit will repeat three short beeps and will not POST. Which of the following is MOST likely the problem?（）
第10题：
pressurestat
high pressure cutout
solenoid valve
low pressure cutout switch