单项选择题 If you must enter a room or compartment to combat the fire, keep an escape path （）.

单项选择题 According to the international regulations concerning the prevention of pollution of sea areas from ships, the disposal into the sea of all plastics is （）.

单项选择题 （） shall be provided to every oil tanker of 150 tons gross tonnage and above to record relevant machinery space and cargo/ballast operations.