A.I+II+III B.I+III+IV C.I+II+IV D.I+II+III+IV
A.安排適當(dāng)?shù)墓ぷ髁?br /> B.保證船員獲得高質(zhì)量和足夠的睡眠 C.制定合理的航行/航次計劃 D.改善船員的工作環(huán)境