细胞中各种化合物或主要元素占细胞鲜重的含量，由多到少正确的排序是（）

A.水，糖类，蛋白质，脂质O、C、H、N

B.水，蛋白质，糖类，脂质O、C、H、N

C.水，蛋白质，脂质，糖类O、C、H、N

D.水，脂质，蛋白质，糖类O、N、C、H

How can the Coast Guard determine that a crew member is “able to understand any order spoken by the officers”?（）

A.Require a demonstration by the officer and the crew member

B.Require a written test

C.Require that an interpreter be provided

D.All of the above