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單項選擇題

The compressed air is supplied by （） to the air reservoirs.

A.compressors
B.forced fans
C.ventilators
D.generators

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單項選擇題

The compressed air is admitted to each cylinder through a cam operated by starting air valve when the piston has just passed its （）.

A.BDC
B.TDC
C.BBDC
D.ATDC

單項選擇題

The complete assembly of bedplate, A-frames and cylinder block is held together by （） to form a rigid structure.

A.tap-bolts
B.jack-bolts
C.tie rods
D.fitted rods

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