單項(xiàng)選擇題The closing of the exhaust valves used on a modern, large, low-speed, main propulsion diesel engine may be directly provided by （）.
A.large conical springs
B.compressed air pressure
C.hydraulic pressure
D.exhaust gas pressure
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1.單項(xiàng)選擇題The water in an operating auxiliary boiler should be tested for alkalinity and chloride content each（）.
A.hour
B.day
C.week
D.month
2.單項(xiàng)選擇題On a turbo-charged, medium-speed diesel engine, which of the following problems is an indication of a restricted air intake passage?（）
A.Engine is hard to start
B.Engine misses
C.Surges at governed RPM
D.Coolant temperature is too low
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Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the （）.
題型：?jiǎn)雾?xiàng)選擇題
Combustion knock can occur in the cylinders of a diesel engine under any condition permitting （）.
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Routine monitoring of a diesel engine should include （）.
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Proper filtering and straining of fuel oil is important because the （）.
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For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because （）.
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