单项选择题
Good housekeeping on a vessel prevents fires by（）.
A.allowing better access in an emergency B.eliminating potential fuel sources C.eliminating trip hazards D.improving personnel qualifications
单项选择题 Generally，the first action in extinguishing an LFG fire caused by escaping gas is to（）.
单项选择题 Gas masks（）.
单项选择题 Fusible-link fire dampers are operated by（）.
