单项选择题
While reading the station bill, you find "three (3) short blasts on the whistle and three (3) short tings on the general alarm bells," this signal is for （）.
A.abandon ship B.dismissal from fire and emergency stations C.fire and emergency D.man overboard
单项选择题 Hydrocarbon vapors are usually detected by the use of the （）.
单项选择题 A fire involving trash and paper waste would be classified as a （）.
单项选择题 A fire in a pile of dunnage would be classified as a （）.
