A、should be gradually increased
B、should be gradually reduced
C、should be constantly kept
D、should be varied up and down
更多“The cooling water temperature （） over a period of 8 hours, and then shut down.”相关的问题
A、Cooling water is alkalescence B、cooling water is acidity C、cooling water has salinity D、cooling water has impurity
A、for the release of air from the cooling water B、providing expansion room for heated cooling water C、a place for implementing water and water treatment agent D、all of the above
A、A.An open vent in the cooling system B、B.A fouled sea chest C、C.A restricted water passage in the engine D、D.Air entrained in the cooling water
A、to cut down the amount of cooling water needed B、to prevent an excess amount of cooling water from being discharged to the bilges C、to supply hot water to the evaporator for more economical operation D、None of the above is tree
A、discharge side of the centrifugal pump B、suction side of the centrifugal pump C、the lowest point of the cooling water system D、inlet of the main engine
A、Air will enter the cooling system B、Carbon will plug the water cooled exhaust manifolds C、The jacket water temperature will rise D、The lube oil viscosity will increase
A、maintain low pH in the cooling water B、reduce the cooling water temperature C、increase cooling water hardness D、form a protective film on metal surfaces
A、The oil temperature is less than the cooling water temperature B、The oil pressure is less than the cooling water pressure C、The oil pressure is greater than the cooling water pressure D、The oil flow control valve is always installed in the oil input line
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