单项选择题
The primary objective of a Ro-Ro vessel is to（）.
A.transfer containers without chassis B.load the vessel with palletized cargo C.transport vehicles D.be loaded full and down to her marks
单项选择题 The piping that routes an oil cargo from the manifold to underdeck pipelines is known as a （）.
单项选择题 The permanent magnetism of a vessel may change in strength due to（）.
单项选择题 The number of rowing oars that must be carried in a motor-propelled open lifeboat on a cargo vessel is（）.
