以下程序段的输出结果是【 】。　　int i=9;　　printf("%o\n",i);

What is NOT a function of the steam drum of a marine water-tube boiler（）.

A.Receives saturated steam from the generating tubes

B.Serves as a reservoir of boiler feed water

C.Holds internal fittings for separation of moisture from steam

D.Collects steam exhausted from the turbines