Which of the listed statements is correct concerning refrigeration systems?（） ["Dehydrators must be used continuously in a refrigeration system","A 25 ton refrigeration system has the same cooling effect as melting 25 tons of ice in 24 hours","A thermostatic expansion valve is used to control refrigerated space temperature","The liquid receiver functions to collect and remove non- condensable gase"]
（）录取的资料和钻柱测试录取的资料有相同之处。 ["稳定试井","不稳定试井","干扰试井","液面监测"]
页脚位于文档的（）。 ["顶部","底部","中部","任意位置"]
谈判实际上是（）。 ["你死我活","你赢我输","权利游戏","权力基础上的博弈"]
最常见的送别形式有哪些？
公务员参加宴会时如何着装？
