单项选择题
What color is used to indicate the last shot of anchor chain?（）
A.Red
B.White
C.Blue
D.Yellow
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相关考题
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单项选择题
A vacuum is initially created in a flash type distilling plant by（）.
A.the flashing of the feed water
B.the condensation of the saltwater feed
C.air ejectors, eductors, or a separate vacuum pump
D.condensation of the distillate -
单项选择题
A refrigeration unit will tend to short cycle when operating （）.
A.under heavy loads
B.during hot gas defrost
C.under light loads
D.during starting conditions -
单项选择题
Which of the following problems could cause air to blow out through the inlet air filter of a running compressor?（）
A.Excessive compression in the cylinder
B.A broken intake valve
C.A dirty inlet filter element
D.An improperly adjusted discharge valve
