【单选题】The book fair and the import and export exhibition held in the city____extraordinary.
【单选题】流化床干燥器特别适用于处理( )的物料。
【判断题】竞价推广作为一种付费广告,企业广告排名位置主要由广告出价和关键词质量度决定。
【简答题】Is this the place ____________the exhibition was held? A.where B.that C.on which D.the one
【判断题】A clean B.L is issued by the seller to the buyer to certify that the goods delivered are in apparent good condition.