群组

0001  "Before disconnecting the oil pipe, would you flush the oil retained in the pipe_____?" asked the oil barge owner.

A. by using of fresh water                   

B. with compressed air

C. by using of sea water                     

D. with chemical compound

0002  "Stand by an engine" means_____.

A. "prepare to stop the engine"           

B. "assemble an engine on its bedplate"

C. "make an engine ready for starting"     

D. "dismantle an engine"

0003  A_____ is the foundation of the engine, without the support of which the shaft alignment in particular, and engine structure as a whole, would inevitably be lost.

A. Frame      B. Bedplate   

C. Cylinder    D. Liner

0004  _____ are commonly used in mechanical-hydraulic governor to sense engine speeds.

A. Bulbs        B. Bulks   

C. Flyweights    D. Flywheels

0005  _____ are generally formed in the frame of the both in-line and Vee engines to give maintenance access to the crankshaft main and connecting rod large end bearing.

A. Doors       B. Aspirate gauze   

C. Coupling    D. Blind

0006  _____ arrangements have low temperature air and high temperature exhaust gas passing through adjacent ports, causing temperature differential problems for the liner material.

       A. Loop scavenge    B. Cross scavenge    C. Unifiow scavenge    D. Supercharge

0007  _____ became oval, it should be machined .

A. The upper half of cross-head bearing        

B. The cross-head pin

C. The cross-head bearing                   

D. The cress-head guide plate

0008  _____ device is provided to prevent starting air from being admitted to the cylinder before the reversing is completed.

       A. An automatic          B. A transmission

       C. A self-regulating       D. An interlocking

0009  _____ fuel oils_____ lubricating oils require treatment before passing to the engine.

A. Both/and    B. Neither/nor   

C. Either/or    D. Both/or

0010  _____ is sometimes used for piston cooling since leaks into the crankcase would not cause problems.

A. Diesel oil    B. Hydraulic oil   

C. Lube oil    D. Mineral oil

0011  _____ is the removal of exhaust gases by blowing in fresh air.

A. Gas exchange    B. Charging   

C. Scavenging      D. Supercharging

0012  _____ is used for cylinder and cylinder head, the salt water is used for cooling the lubricating oil, the fresh water in the coolers and the charging air in the air cooler.

       A. The fuel oil           B. The lube oil

       C. The sea water         D. The fresh water

0013  _____ may be the first possible cause which makes the engine to lose power or slow down when it is running.

A. Hot bearing                          

B. Starting valves

C. Unequal distribution of load             

D. Excessive crankshaft clearance

0014  _____ of an engine crankshaft can be detected by measuring deflections of crank webs for each unit of the engine.

A. Misalignment    B. Length   

C. Strength        D. Stresses

0015  _____ of the A-frames there is a strong cast iron frame called the scavenging air box.

A. At the top    B. At the bottom   

C. In the top    D. In the bottom

0016  _____ pistons have low inertia and high coefficient of thermal expansion.

        A. Cast iron    B. Cast steel   

C. Forged steel    D. Aluminum

0017  _____ scavenging means both exhaust ports and scavenging ports are arranged to the same side.

A. Uniflow    B. Cross   

C. Loop      D. Straight

0018  _____ should not undertake any task which will interfere with the supervision duties relating to the main machinery and associated equipment.

A. The watch keeping personnel           

B. The chief engineer

C. The person on a bunker barge          

D. Any of the above

0019  _____ tappet clearance will cause the exhaust valve to open early and close late in cycle and will increase its maximum lift.

       A. Excessive           B. Insufficient

       C. Correct            D. None of the above

0020  _____ tappet clearance will cause the exhaust valve to open late and close early in cycle and will reduce its maximum lift.

A. Correct      B. Insufficient   

C. Excessive    D. None of the above

0021  _____ tappet clearance will cause the exhaust valve to open late and close early in cycle and will reduce its maximum lift.

A. Correct                          

B. Insufficient

C. Excessive                        

D. None of the above is correct.