试题详情单项选择题当海上能见距离达到20海里时,应认为是:()A、能见度中等B、能见度良好C、能见度很好D、能见度极好正确答案:C答案解析:关注下方微信公众号,在线模考后查看热门试题起锚时,下列那项特征不能用来判断锚离底(船首()舵()船舶了望的手段有:()Each line has a larg什么叫主航道和非主航道?灭火()Is that()(重)cargo?safety belt()旗()How answers? ---船钟()Each line has a largWear the breathing aThe work of CleaningI am your agent.()The ()(干货船 )can’t ca最大的货船是油轮。()主甲板以下是二层甲板。()溺水中胸腔中有大量的水,并且心跳呼吸停止