單項(xiàng)選擇題Which of the following statements is not true concerning symptom of a fire in the scavenge air box?()

A.an increase in the exhaust temperature of the affected cylinder
B.the turbocharger may surge
C.the explosion pressure in all cylinders will rise violently
D.smoke from the turbocharger air inlet filter will be seen


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1.單項(xiàng)選擇題Which of following functions is not one of the functions of air conditioner?()

A.refreshing the air
B.making person upset
C.adjusting the air humidity
D.adjusting the air temperature

2.單項(xiàng)選擇題The oil discharge monitoring system in the oil tanker vessels is used for detecting the amount of oil discharged overboard to ensure that it does not exceed()

A.15 liters nautical mile
B.30 liters nautical mile
C.60 liters nautical mile
D.100 liters nautical mile

4.單項(xiàng)選擇題Which cause of following will not lead to refrigeration plant short-cycle?()

A.lack of refrigerant
B.refrigerant with much water
C.set defectively low pressure relay
D.no cooling water

5.單項(xiàng)選擇題On modern ships, centrifugal pump with a self-primer has replaced reciprocating pump as bilge pump because()

A.centrifugal pump is cheaper than reciprocating pump
B.the size of centrifugal pump with same capacity is smaller than that of reciprocating pump
C.centrifugal pump makes maintenance easier than reciprocating pump does
D.all of the above

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The additional mark ()in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.

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For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?()

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The ISPS Code consists of a mandatory section-Part A, which shows()

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As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?()

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The cetane rating of diesel fuel is an indication of the ()

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