单选题 The four-stroke cycle is so called because it takes ()to complete the processes needed to convert the energy in the fuel into work.

A、 two strokes of the piston

B、 four strokes of the piston

C、 one revolution of the crankshaft

D、 four revolutions of the crankshafts

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相关试题

单选题 When will 'black-out' result in the serious consequence?( )

A、Moving in rush-hour waters

B、The engine being restarted

C、Navigating in bad weather

D、Moving in rush-hour waters and Navigating in bad weather

单选题 Why do total black-outs seldom happen?( )

A、Because within several hours the engine can be started up again

B、As engineers can take rapid actions to prevent a total plant failure

C、Because all engineers can report to the engine room quickly

D、As a number of auxiliaries can be started in sequence.

单选题 In the event of an engine breakdown, what is the first action according to this passage?( )

A、'Black-out' has to be avoided

B、A well organized, continuous maintenance programme is made up

C、All engineers are present at the engine room

D、The alarm must be sounded

单选题 Which of the following would be the best title for the passage?( )

A、Black-out

B、Engine Breakdown

C、Engine Phenomenon

D、Engine Room

单选题 What is NOT mentioned about overhaul repair?( )

A、Overhaul repair is a major repair.

B、Overhaul repair is carried out in a dock.

C、Overhaul repair is carried out once a year.

D、Overhaul repair is done for the purpose of rating.

单选题 What is NOT true about annual repair?( )

A、It is carried out once a year.

B、It is a minor repair.

C、It is done according to the requirements of Registration Bureau.

D、It is carried out during a stay in a port of call.

单选题 What statement is TRUE according to this passage?( )

A、Voyage repair is carried out in the event of emergency.

B、Voyage repair is also known as overhaul repair.

C、Annual repair is the most important for the ship's safe operation.

D、Damage repair together with annual repair is a minor repair.

单选题 What is true about voyage repair?( )

A、Voyage repair is a major repair work.

B、Voyage repair is a temporary repair.

C、Voyage repair is carried out in a dock.

D、Voyage repair can lead to voyage schedule breakdown.