The port State control officer will ensure that（）is performed by all crude carriers either required to have a crude oil washing system or where the owner or operator chooses to install a crude oil washing system.<br>A:cargo loading operations<br>B:cargo unloading operations<br>C:cargo control operations in the transport<br>D:crude oil washing

The port State control officer will ensure that（）is performed by all crude carriers either required to have a crude oil washing system or where the owner or operator chooses to install a crude oil washing system.
A:cargo loading operations
B:cargo unloading operations
C:cargo control operations in the transport
D:crude oil washing

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