【单选题】He ___very busy this week. He ___ free next week.
【单选题】The population will be increasing very fast unless they ______ with new methods to deal with it.
【简答题】用括号里的词改写句子 The film was very boring. We almost fell asleep. (so...that.. 结果状语从句 )
【单选题】Our teachers are very strict ______ us in class, but they are kind _____ everyone after class.
【简答题】边长为 0.5m 的正方形通风管道 , 其当量直径为 _______ 。
【单选题】边长为0.5m的正方形通风管道,其当量直径为____________m。
【判断题】詹宏志在选编1980年台湾散文选时所写的序言是《在我们的时代》。
【多选题】中间包冶金的概念包括( )。
D.
中间包内可以进行吹氩、喂丝、加热,起到微调成分,调节温度等冶金功能
【简答题】边长为0.5 m的正方形通风管道,其当量直径为( )m。