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單項選擇題（）is put into use in the late years to maintain a preset tension in a mooring line after a ship has been tied up at a pier.

A.The large-tension mooring
B.The small-tension mooring
C.The variable-tension mooring
D.The constant-tension mooring

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1.單項選擇題However fast or slow the combustion rate, it is still a （） between carbon, hydrogen, sulphur and oxygen that releases heat.

A.physical deformation
B.state exchange
C.chemical reaction
D.coalescence

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2.單項選擇題The trend nowadays is to build the frame box as a separate fabricated construction and then, after stress relieving and machining the mating surfaces, to mount it on the （）.This has the advantage of saving weight.

A.seating
B.bedplate
C.entablature
D.cylinder block

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3.單項選擇題If the bedplate was too rigid, then as the hull flexed, the （）, which secure the engine into the ship would be likely to break, and there would be a danger of the bedplate cracking.

A.through bolts
B.jack bolts
C.holding down bolts
D.tap bolts

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4.單項選擇題The bedplate must be flexible enough to hog and sag with the foundation plate （） it is attached and which forms part of the ship’s structure.

A.in which
B.on which
C.to which
D.by which

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5.單項選擇題The fire drill must, as far as practicable, be conducted if （）.

A.there is a minor emergency
B.there is an actual emergency
C.there were a minor emergency
D.there were an actual emergency

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