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
The cooling water of the diesel engine should be treate...
单项选择题The cooling water of the diesel engine should be treated, because it has（）
A.alkale scence B.acidity C.salinity D.impurity
When received the order "finished with engine" which of...
单项选择题When received the order "finished with engine" which of the following operations is wrong?（）
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
When the diesel is stopped, which of the following item...
单项选择题When the diesel is stopped, which of the following items is wrong?（）
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
