【简答题】The gangway/ accommodation ladder is too high.
【单选题】____(降低)the gangway, please
【单选题】The sailor keeping ()watch should clean the gangway, the rails, bulwark and the spaces around the gangway.
【简答题】某半导体材料的禁带宽度为 3.26eV,求其制成的LED芯片的发光波长。
【单选题】()the gangway, please.
【单选题】Pay attention to the ___(安全)of the gangway.
【多选题】国际市场商品定价方法可分为( )等几大类。