A、butterfly valve
B、globe valve
C、gate valve
D、non-return valve
更多“A （） in the air delivery line near to each compressor is essential.”相关的问题
A、An increased air temperature differential between the cooler inlet and outlet B、A decrease in the air pressure differential across the cooler C、Excessive condensate forming in the air box D、A decrease in the air temperature differential between the cooler inlet and outlet
A、the pressure of the starting air is high enough B、there is enough air in the air reservoirs C、the air is supplied into the cylinders in the appropriate sequence D、all of the above
A、moisture in the compressed air supply B、excessive dryness in the compressed air supply C、pressure surging in the compressed air receiver D、insufficient lubrication of the system components
A、A.The cargo's temperature is colder than the dew point of the air in the space B、B.The cargo's temperature is warmer than the dew point of the air in the space C、C.The dew point of the air in the space is lower than the dew point of the outside air D、D.All of the above
A、noise coming from that air starting valve B、continuous operation of the starting air compressor C、zero air pressure in the air starting system D、overheated starting air pipe to the cylinder head
A、A.Maximum mooring line tension divided by the anchor's weight in air B、B.Anchor's weight in air divided by the maximum mooring line tension C、C.Preloading tension divided by the anchor's weight in air D、D.Operating tension divided by the anchor's weight in air
A、A.pressure changes in the air mass B、B.movement of the air mass C、C.the heterogeneous nature of the air mass D、D.upper level atmospheric changes
A、A.Oil vapour in air piping are dangerous B、B.Explosion will cause oil vapouring in air lines C、C.Oil vapour in air piping should be drained D、D.Oil in air piping should not be drained
A、broken inlet valves B、broken discharge valves C、pulsations in the air distribution system D、overloading of the air distribution system
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