单项选择题
The piping that routes an oil cargo from the manifold to underdeck pipelines is known as a （）.
A.cargo fill B.line drop C.transfer D.branch line
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（）.
单项选择题 The most likely location for a liquid cargo fire to occur on a tanker would be（）.
