单选题For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）Athe temperature and flow quantity of the exhaust gas from M.EBthe quantity of steam demandedCthe rotary speed and the cooling water temperature of main engineDefficiency of M.E turbocharger
单选题
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.E turbocharger
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