载重量一万吨级商船抛锚时的船速(对地)从锚机负荷考虑一般应控于:() ["2kn以下","3kn以下","0.2kn以下","4kn以下"]
绞锚时,锚链太紧绞不动且方向朝前时,若要尽早把锚绞起,可以:() ["慢速倒车","慢速进车","快速倒车","快速进车"]
配合煤是指几种不牌号的单种煤,按一定()配合起来做为炼焦用煤。
适合DWT一万吨级货轮抛锚的锚地水深一般为:() ["10~12米","15~20米","22~30米","30~40米"]
船舶在选择锚地时,应注意锚地低潮时的水深必须大于:() ["锚泊船1倍吃水+2/3最大波高","2倍吃水+2/3最大波高","1.5倍吃水+2/3最大波高","2.5倍吃水+2/3最大波高"]
初馏塔进料严重带水的后果是什么?工艺操作上应有立即采取哪些行动?