【判断题】关键词能够表现该论文主题内容,具有实质意义。
【简答题】用司盘 80(HLB 值 4.3) 和聚山梨酯 20(HLB 值 16.7) 制备 HLB 值为 9.5 的混合乳化剂 100g ,问两者应各用 克。
【单选题】地下室、卫生间等墙面防水处理所需要的脚手架计算 ,防水高度超过3.6米,套用( )脚手架乘以系数()。 D
【单选题】John’s bad habit is _____ without thorough understanding. abit is _____ without thorough understanding. A. read B. being read
【单选题】地下室、卫生间等墙面防水处理所需要的脚手架计算 ,防水高度超过3.6米,套用()脚手架乘以系数( )。
【单选题】With good reading skills, you can ______.
A.
understand anything you read without difficulty
B.
work out the author's meaning if only you concentrate on the book
C.
understand what you read with the help of a good dictionary
D.
concentrate on whatever you read