单项选择题
A.at each control station
B.in the chief engineer’s quarters
C.in the captains quarters
D.All of the above are correct
单项选择题 White smoke exhausting from an operating diesel engine may indicate （）.
单项选择题 Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.
单项选择题 When would the available energy of the exhaust gases of a two-stroke/cycle diesel engine be insufficient to drive an exhaust gas turbocharger, resulting in the incorrect amount of air for combustion?（）