单项选择题
On a vessel carrying grades A，B，C or D cargoes，enclosed spaces where sources of vapor ignition are normally present shall NOT be segregated from cargo tanks by（）.
A.cofferdams B.galleys C.pump rooms D.tanks used to carry liquids having a flash point of 150°F or above
单项选择题 Oil may NOT be transferred unless（）.
单项选择题 Of the following，the most important consideration for a tanker is（）.
单项选择题 Notwithstanding the provisions of this Regulation，the segregated ballast conditions for oil tankers less than 150 meters in length shall be to the（）of the Administration.
