单项选择题
A.8,8% B.4,0.08% C.6,0.06% D.4,0.06%
A.自我生理节律把握 B.安全检查 C.法制 D.向船员支付高薪
A.Ⅱ—Ⅳ B.Ⅰ、Ⅱ C.Ⅰ、Ⅱ、Ⅳ D.Ⅰ—Ⅳ