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

Sea water temporarily pumped into tanks to simulate the increased vertical loading of environmental forces is termed（）.

It’s（）to stow optional cargo in the lower hold．You’d better give it block stowage in the tweendecks，then it can be easily discharged either at Shanghai，or Dalian or Tianjin.

Large quantities of uncovered pig iron or billets should not be carried in the upper-tween decks because（）.

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.

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

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

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

In preparing a cargo space for receipt of a shipment of bagged cargo，which instruction for laying dunnage should be followed? （）

In observing rig motion while under tow，the period of roll is the time difference between（）.