The author mentions the ports of Los Angeles and Long Beach to ______.
When deciding the composition of the engineering watch, which may include appropriately qualified ratings, following criteria shall be taken into account()
Ⅰ.the type of ship
Ⅱ.the type and condition of the machinery
Ⅲ.the safety of life, ship, cargo and port
Ⅳ.the observance of international, national and local regulations
免费的网站请分享给朋友吧