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

相关考题

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

Which of following functions is not one of the function...

单项选择题Which of following functions is not one of the functions of air conditioner?（）

A.refreshing the air
B.making person upset
C.adjusting the air humidity
D.adjusting the air temperature

船舶电气与船舶安全

According to the principle of four stroke diesel engine, what is the number of its efficient work stroke per revolution?（）