單項選擇題In heavy marine engine the practice is to drive the engine on（）which has previously been stored in starting air reservoirs.

A.electric motor
B.hydraulic motor
C.compressed air
D.turning gear


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1.單項選擇題The water level of an exhaust gas boiler which is independent of the auxiliary boiler and just as the extra heating surface of it （）

A.will be modulated in proportion
B.will be modulated in proportion and integral
C.will be modulated in proportion and differential
D.will not be modulated at all

2.單項選擇題For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）

A.the temperature and flow quantity of the exhaust gas from M/E
B.the quantity of steam demanded
C.the rotary speed and the cooling water temperature of main engine
D.efficiency of M/ turbocharger

3.單項選擇題Which of the following equipment can not be used for the waste heat recovery of the M/E to further improve its thermal efficiency?（）

A.M/E turbocharger
B.exhaust gas boiler
C.incinerator
D.fresh water generator

5.單項選擇題What is the result of converting 10℃ into degree of Fahrenheit?（）

A.0°F
B.18°F
C.32°F
D.50°F