When fruit is carried as refrigerated cargo，the most frequent cause of its being infected at the discharge port is（）.

Ullage measurements are taken from the top of the liquid to（）.

Prior to backloading portable tanks or drums onto an offshore supply vessel，check that each tank is（）.

If the cargo gear on your vessel is equipped with a regular guy and a preventer guy，you should（）.

An oil tanker，except as provided for otherwise，might discharge certain amount at certain rate of oil or oily mixtures into sea when（）.

An oil tanker operating with dedicated clean ballast tanks shall be equipped with（），approved by the Administration on the basis of specification recommended by the Organization，to enable supervision of the oil content in ballast water being discharged.

If reefer spaces are not properly cleaned prior to loading cargo，it will most likely cause（）.

By regulation，cargo tanks must be inert before and during what operation?（）.

Generally speaking，the heavier cargo will go into the（），distributing it evenly fore and aft，the lighter cargo will probably be placed in the（）.

The greatest strain，when lifting a load with the jumbo purchase，is on（）.