单项选择题
Inform the bridge and give the alarm at once （）the fire.
A. in case B. case of C. in case of D. in the case of
单项选择题 Fire and boat drills are carried out （）.
单项选择题 All the crew must know the locations as well as the （）of the life-saving and fire-fighting appliances.
单项选择题 What kind of （）can be used for gas and chemical fires?
