单项选择题X 纠错
A.the SW outboard valves
B.the tailshaft LO stop valve
C.the drain valve of the boiler
D.propeller shaft sealing device
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单项选择题
A.sea valve chest, sect valve, thruster
B.bilge motherboard, steering and the shaft system
C.sea water system
D.fresh water system
单项选择题
A.Ⅰ
B.Ⅱ
C.Ⅰ+Ⅱ
D.Ⅲ
单项选择题
A.quality
B.reliability
C.price fluctuating
D.applicability
单项选择题
A.the reason of replacing
B.the course of replacing
C.crews who do this work
D.where and when the replacing being done
单项选择题
A.Cooling water is alkalescence
B.cooling water is acidity
C.cooling water has salinity
D.cooling water has impurity
单项选择题
A.alkale scence
B.acidity
C.salinity
D.impurity
单项选择题
A.stop the LO pump, SW pump, FW pump
B.stop the priming FO transfer pump
C.engage the turning gear
D.open the scavenge air belts drain valve and cover the turbocharger silencer with the dustproof cover
单项选择题
A.keep all systems in normally running
B.the main engine is stand-by
C.shut off the starting air bottle outlet valve
D.pay attention to the changes of the system parameters
单项选择题
A.fuel valve
B.the starting air valve
C.the sea chest
D.the main sea pump inlet valve
单项选择题
A.shut off the starting air receiver outlet valve
B.stop the FO priming transfer pump and shut off the correspondence inlet and outlet valve
C.stop the SW pump immediately and shut off the correspondence inlet and outlet valve
D.stop the FW pump immediately and shut off the correspondence inlet and outlet valve