问题详情

All member of the engineering watch shall be familiar with assigned watch-keeping dutiesIn addition, every member shall, with respect to the ship they are serving in have knowledge of Ⅰthe use of appropriate internal communication systemsⅡthe use of GMDSSⅢthe escape routes from machinery spaceⅣthe number location and types of fire-fighting equipment in the machinery spaces.

A.Ⅰ+Ⅲ+Ⅳ

B.Ⅱ+Ⅲ+Ⅳ

C.Ⅲ+Ⅳ

D.Ⅰ+Ⅱ+Ⅲ+Ⅳ

请帮忙给出正确答案和分析，谢谢！