A.30,書面 B.30,口頭 C.60,書面 D.45,口頭
A.8,8% B.4,0.08% C.6,0.06% D.4,0.06%
A.自我生理節(jié)律把握 B.安全檢查 C.法制 D.向船員支付高薪