单项选择题
Diesel engine control can be obtained by the bridge （）.
A.at any time B.only after the engine room control station is switched to “bridge control” C.whenever the secondary station is switched to "bridge control" D.with the approval of the chief engineer only
单项选择题 To determine if the lube oil filter elements need changing, （）.
单项选择题 Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）
单项选择题 To successfully reduce an excessively high diesel engine exhaust gas temperature, you should （）.
