A.try to find out where the oil is coming from
B.call the Master
C.have the pump man check the discharge piping
D.shutdown operations
第1题
A.capacity will increase
B.capacity will decrease
C.suction pressure will increase
D.suction pressure will decrease
第2题
A.a centrifugal fan
B.a direct expansion cooler
C.a hermetic compressor
D.a centrifugal pump
第3题
A.The piston rod
B.The cross head pin
C.The gudgeon pin
D.The crank-pin
第4题
A.machine efficiency
B.machinery efficiency
C.mechanical efficiency
D.mechanics efficiency
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