輪機英語單項選擇題每日一練(2019.09.13)

單項選擇題
The longer the ignition delay period occurs in a diesel engine, the （）.
A.less fuel will enter the cylinder
B.lower will be cylinder compression temperatures
C.more complete will be fuel combustion
D.more rapid will be the rise in combustion pressure
單項選擇題
If the cooling water temperature and the lube oil temperature in a diesel engine are too high, the cause can be （）
A.a dirty lube oil strainer
B.internal water leaks
C.an oil suction line restriction
D.excessive wears of the cooling water pump
單項選擇題
Among the basic categories of equipment, which of the following are used to convert the hydraulic energy into linear motion?（）
A.Hydraulic pumps
B.Valves
C.Hydraulic cylinders
D.Hydraulic motors
單項選擇題
Which of the processes listed consumes the greatest amount of power while producing the greatest amount of heat?（）
A.Overcoming sliding friction
B.Overcoming rolling friction
C.Overcoming fluid friction
D.Overcoming oil wedge friction
單項選擇題
The transmission system is the means （）the movement of the rudder is accomplished.
A.by which
B.to which
C.in which
D.at which

<meter id="5y1u0"><div id="5y1u0"><meter id="5y1u0"></meter></div></meter>