Upon the completion of required tests, a （） should be placed on each extinguisher, showing the date and the person who completed the tests.

If you must enter a room or compartment to combat the f...

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

According to the international regulations concerning t...

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 （）.

（） shall be provided to every oil tanker of 150 tons gr...

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.