A、changing over to hand pump operation
B、engaging the trick wheel
C、the system has been filled with new oil
D、the rudder angle indicator does not match the helm position
更多“The purging of air from an elector-hydraulic steering gear unit is necessary when（）”相关的问题
A、reclaims water B、purges air without losing refrigerant C、purges air with some loss of refrigerant D、purges lube oil from the refrigerant
A、admit only enough fresh outside air to provide proper ventilation B、reduce the air reheating system load C、lower the compressor head pressure D、operate the purge recovery unit continuously
A、A.admit only enough fresh outside air to provide proper ventilation B、B.reduce the air reheating system load C、C.lower the compressor head pressure D、D.operate the purge recovery unit continuously
A、purge lube oil from the liquid refrigerant B、recover water purged from the system C、separate foul gases from the receiver D、purge non-condensable gases without losing refrigerant
A、purge lube oil from the liquid refrigerant B、recover water purged from the system C、separate foul gases from the receiver D、purge non-condensable gases without losing refrigerant
A、increases the density of the air B、decrease the density of the air C、increases the specific heat of the air D、decreases the specific heat of the exhaust
A、the supply of normal air and removal of compressed air B、the supply of fuel oil and combustion of the atomized oil C、the supply of fresh air and removal of exhaust gases D、the supply of fresh air and removal of the extra heat
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