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單項選擇題

The starting air system usually has （） to prevent starting if anything is not in order.

A.stop valves
B.interlocks
C.non-return valves
D.air vents

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單項選擇題

The starting air system usually has （） to prevent starting if anything is not in order.

A.drain cocks
B.vent valves
C.counteracts
D.interlocks

單項選擇題

The space between cylinder liner and jacket is called （）.

A.the cooling water
B.the circulating water
C.the cooler
D.the cooling water space