A fire starting by spontaneous combustion can be expected in which condition?（）.

A.Paints, varnish, or other liquid flammables are stowed in a dry stores locker

B.Inert cargoes such as pig iron are loaded in a wet condition

C.Oily rags are stowed in a metal pail

D.Clean mattresses are stored in contact with an electric light bulb

在（）造成的全停电时，应人工切断锅炉所有燃料，做好电源恢复重新启动准备。

A.锅炉设备故障

B.电气设备故障

C.汽机设备故障

D.因外界不可抗力