单项选择题
Post two lookouts with binoculars.（）
A.安排两名瞭头，带上六分仪。 B.安排两名瞭头，带上罗盘经。 C.安排两名瞭头，带上雷达。 D.安排两名瞭头，带上望远镜。
单项选择题 Wear the breathing apparatus before entering an enclosed space.（）
单项选择题 For the duties assigned in the muster list, one person may do more than one work and one work may be done by more than one person.（）
单项选择题 The signals that will be used for emergency should be clearly set out.（）
