【单选题】对生物起着直接影响的临近环境称为( )。
【单选题】实际中,一般期望最低稳定转速( )越好。
【多选题】民族大义是引导我国各族人民_________的行动指南。
【单选题】You oughtnt to have driven that car with the brakes out of order. You______a serious accident.
【单选题】马克思主义最崇高的社会理想是实现( )。
【简答题】He quickly stepped on the brakes, and his car came to a stop just in time ______an accident. (A) to avoid (B) to be avoiding (C) to have avoided (D) to have been avoided
【单选题】听力原文:Was there any damage to the car from the accident? (A) No, because it was an accident. (B) There's a little around the passenger door. (C) I don't usually drive to work. (26)
【简答题】升膜式蒸发器的特点是:1 短,适用于 料液;2高速二次蒸汽具有良好的 作用,故尤其适用于 的料液 ;3 引起沸点升高,故最好控制 进料;4 一般组成 效流程使用;5 不适用于 的料液;6 加热蒸汽与 料液 呈 并 流。升膜式蒸发器成膜是通过控制蒸发强度实现。