单项选择题
A.cargo loading operations
B.cargo unloading operations
C.cargo control operations in the transport
D.crude oil washing
单项选择题 The port State control officer or the surveyor authorized by the port State Administration must be aware that（）may be carried on product carriers.
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（）.