【简答题】使用涂层预防电偶腐蚀,最好涂在( )极上。
【单选题】Chinese and Maths ______ my favourite lessons. [ ]
【单选题】肠管迅速膨胀,肠壁变薄,可引起等渗性脱水的是
【单选题】Though there are some differences in American and Chinese education, both systems are ________ excellent graduates. [ ]
【单选题】某企业以低价格和高促销水平的方式推出新产品,此种策略属于( )
【简答题】民用建筑的基本组成部分有哪些?它们各起什么作用?