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單項(xiàng)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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單項(xiàng)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

單項(xiàng)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