【单选题】What is the text talking about?
A.
What the difference are between water and other drinks.
B.
What is human body made of.
C.
Water is the best drink.
【单选题】According to the video, what is difference between a good product and a great product?
【简答题】“三同时”制度是指建设项目中的环境保护设施必须与主体工程( )的制度 A.同时设计 B.同时施工 C.同时投产使用 D.同时安装
【简答题】已知l ∥ α,且l的方向向量为(2,m,1),平面α的法向量为 (1, 1 2 ,2) ,则m=______.
【单选题】在与公文有关的几个术语中,人们一般习惯于将传统载体形成的材料称为( )。
【简答题】What is the difference between B2B and B2C?