For one or two types of engine,the piston and rod can be wit

【名词&注释】

增压器(turbocharger)

[单选题]For one or two types of engine,the piston and rod can be withdrawn downwards from the cylinder into the crankcase and then out through （）.

A. the cylinder cover
B. the bottom of bed-plate
C. the sump
D. the crankcase door

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学习资料：

[单选题]增压器校中测量是通过测量（）间隙进行对中情况的精确检验。

A. N
B. M、L
C. K1
D. K

[单选题]Air cocks, usually positioned at the （） in a circulating system, is used to get rid of the air in the system.

A. bending joint
B. expansion tank
C. weld
D. the highest point

[单选题]Before starting the turning gear, （） should be worked by hand to minimize corrosive action on the liners.

A. the indicators
B. the starting valves
C. the cylinder lubricators
D. the turning gear

[单选题]Compressed air is used on board ship （）.

A. for starting diesel engines
B. in pneumatic control system
C. in pneumatic tools
D. All the above are true

[单选题]In a purifier, the interface between the liquid seal and the oil should be positioned as close as possible to （）.

A. the outlet of oil
B. the outlet of water
C. the bowl periphery
D. the center of bowl

[单选题]The needle valve in the injector （） at a pre-set pressure which ensures that the fuel will atomize once it enters the cylinder.

A. will lift
B. will be lifted
C. will close
D. will be closed

[单选题]The operation between two fuel injections is called a working cycle, which consists of a fixed sequence of eventsWhat does "which" mean in this sentence?（）

A. a working cycle
B. the operation
C. two fuel injections
D. event

[单选题]To avoid scavenge fires occurring the engine timing and equipment maintenance （）.

A. should be correctly carried out
B. should correctly be taken place
C. should carded with care
D. must to carry out with great care

[单选题]All diesel engines are classified as（）.

A. four cycle
B. compression ignition
C. vacuum ignition
D. external combustio

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