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單項(xiàng)選擇題

（） is secured by means of side-chock bolts and end-chock bolts.

A.The bedplate
B.The column
C.The main bearing
D.The double bottom

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單項(xiàng)選擇題

（） in what position the engine stops there will always be at least one of the cylinders with its starting air valve open to admit compressed air to start the engine.

A.Because
B.Owing to
C.For
D.No matter

單項(xiàng)選擇題

（） for the camshaft gear train is taken from a spur gear which for a six cylinder engine is at the coupling end.

A.The driven gear
B.The drive
C.The grease
D.The lubricating oil