单项选择题
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
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相关考题
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单项选择题
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 -
单项选择题
The space between cylinder liner and jacket is called （）.
A.the circulating tank
B.the scavenge box
C.the cooling water space
D.the cooler -
单项选择题
The shells are secured by means of bearing caps and studs, the necessary clearance being provided by means of （） of different thickness.
A.shims
B.packing
C.glands
D.washers
