单项选择题
A.category A substances
B.crude oil
C.certain“oil like”noxious liquid substances
D.category B,C and D substances
单项选择题 The port State control officer may ensure that（）are exhibited in conspicuous places throughout the ship.
单项选择题 The name and hailing port of a documented commercial vessel is（）.
单项选择题 In reaching a decision of detention，the port State control officer will have regard to （），making an allowance for fair wear and tear over the minimum acceptable scantlings.