【多选题】突发性环境污染事故呈现的主要特性有()。
【单选题】The plan ________encourage the employees to improve their work turned out to be a success.
【简答题】温度在变质作用过程中主要引起岩石的( )。
【判断题】在不考虑资金时间价值的前提下,投资回收期越短,反映项目的获利能力越强。( )
【简答题】Write a
request letter according to the given situation of Exercise III or IV of Unit 3
(P62-63).
【单选题】Their performance turned out to be the highlight of the Art festival.
【简答题】分离器的工作压力( ),则液面( ),分离效果变差。
【单选题】They sat with their backs turned to the building ______