轮机英语章节练习(2019.12.27)

单项选择题
When the current flow through a copper wire increases, its （）
A.resistance will decrease
B.insulation will bum
C.temperature will increase
D.conductivity will increase
单项选择题
To guarantee that a reduction gear bearing is receiving proper oil supply, you should check the （）
A.lube oil temperature at the cooler outlet
B.lube oil strainer magnets bearing
C.lube oil temperature
D.lube oil pressure to the bearing
单项选择题
If a ship is required by the Administration to set, or is already at a higher security level than that set for the port it intends to enter or in which it is already located, then the ship shall advise without delay, the （） of the.Contracting Government within whose territory the port facility security officer of the situation.
A.competent authority
B.CSO
C.PSCO
D.Master
单项选择题
Maximum horsepower of a diesel engine is attained （）.
A.when the engine RPM is pulled down by overload
B.at rated engine RPM
C.at 95 % of rated engine RPM
D.at 95 % of a properly adjusted governor RPM with the engine under full load
单项选择题
Deck machinery, which is also known as hull machinery, includes all power driven equipment located （）the machinery spaces that is （） with the main propulsion plant.
A.inside；associated
B.inside；not associated
C.outside；associated
D.outside；not associated
单项选择题
In the four-stroke engine, it takes （） to make one power stroke.
A.one propulsion
B.two propulsions
C.two revolutions
D.one revolution
单项选择题
（） connected to the moving tiller will bring the floating lever pivot and the lever into line at right angles to the screw shaft axis.
A.A cut-off lever
B.A swivel block
C.A cross-head
D.A driving gear
单项选择题
（） is provided to alternators, in the event of prime mover failure to ensure that the alternator does not act as a motor.
A.Reverse current protection
B.Reverse power protection
C.Synchronising device
D.Frequency meter
单项选择题
Operating conditions in the crank chamber are very （） those in the cylinder.
A.the same as
B.similar to
C.separated from
D.different from
单项选择题
If a diesel engine has been stopped because of piston seizure due to severe overheating, the crankcase（）
A.inspection covers should not be opened until the engine has cooled
B.ventilation system should be continued in operation for one hour for cooling
C.scavenge pump should be immediately secured to prevent loss of lube oil
D.explosion covers should be opened slightly to provide extra ventilation