单项选择题
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
According to the principle of four stroke diesel engine...
单项选择题According to the principle of four stroke diesel engine, what is the number of its efficient work stroke per revolution?（）
A.1/2 B.1 C.2 D.3
What type of electric motor is most commonly used on bo...
单项选择题What type of electric motor is most commonly used on board ship?（）
A.non-synchronous electric motor B.synchronous electric motor C.fully enclosed electric motor D.watertight electric motor
Which of the following statements is not true concernin...
单项选择题Which of the following statements is not true concerning symptom of a fire in the scavenge air box?（）
A.an increase in the exhaust temperature of the affected cylinder B.the turbocharger may surge C.the explosion pressure in all cylinders will rise violently D.smoke from the turbocharger air inlet filter will be seen
