单项选择题
An electrical fire should be put out by dry powder. ()
A.电火应该使用干粉扑灭。 B.木火应该用干粉扑灭。 C.油火应该用干粉扑灭。 D.普通火应该用干粉扑灭。
单项选择题 The third officer looks after the fire-fighting and life-saving apparatus.()
单项选择题 What would you do if hearing an abandon ship alarm?()
单项选择题 Can you tell me how to use the foam extinguisher? ()