单项选择题
A.open
B.close
C.opens
D.closes
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.
单项选择题 When making entries in the Oil Record Book, the date, operational code and item number shall be inserted in the appropriate columns and the required particulars shall be recorded () in the blank spaces.