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單項(xiàng)選擇題

The A-frames carry the crosshead guides and support the engine （）.

A.foundation
B.seating
C.entablature
D.bedplate

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單項(xiàng)選擇題

Basically the bedplate consists of two （）, which run the length of the engine.

A.longitudinal girders
B.transverse girders
C.fore girders
D.aft girders

單項(xiàng)選擇題

The bedplate must be rigid enough to support the weight of the rest of the engine, and maintain the crankshaft, which sits in the bearing housings in the （）, in alignment.

A.longitudinal girders
B.transverse girders
C.fore girders
D.aft girders