轮机英语章节练习(2019.09.20)

单项选择题
When attempting to start a main propulsion diesel engine, the engine, the engine turns at the proper speed but will not startYou should check the（）
A.starting air pressure
B.scavenge air pressure
C.over-speed trip
D.banjo oiler line
单项选择题
The consistent burning of fuel oil with a high sulfur content in a diesel engine will result in （）
A.clogged fuel injection pumps
B.increased cylinder liner wear
C.intake valve stem corrosion
D.varnish deposit on pistons
单项选择题
Wristpin bearings are difficult to lubricate because of their oscillating motion and（）
A.their free-floating design
B.their relatively small size
C.the reciprocating motion of the piston
D.their position in the lubrication system
单项选择题
Zinc rods are installed in the refrigeration system （）.
A.liquid strainer
B.liquid receiver
C.saltwater condenser
D.evaporator
单项选择题
When paralleled, AC generators must have the same （）
A.frequency
B.number of phases
C.phase rotation
D.All of the above
单项选择题
The ability of lubricating oils to resist viscosity changes during temperature changes is indicated by the（）
A.American Petroleum
B.Institute number viscosity index number
C.Seconds Saybolt Furol number
D.Seconds Saybolt Universal number
单项选择题
In engines with system, the lubricating oil can be added to the engine through the filling hole in the crankcase cover, by using a hand oil can, or through the separator pipe（）
A.lubricating oil
B.dry sump
C.circulated tank
D.wet sump
单项选择题
Engage the flywheel with the （）.
A.turning gear
B.motor
C.driving gear
D.driven gear
单项选择题
When the vessel entering the dock, the first work that engineer should contact with the shipyard （）
A.releasing the boiler water
B.the explosion detecting and cleaning for the fuel tank
C.the docking project related item
D.shore power and fire fighting water supply
单项选择题
Increasing the compression ratio of a diesel engine while maintaining the designed rate of fuel flow will result in （）
A.increased horsepower
B.reduced efficiency
C.increased heat loss
D.lower cylinder pressures