测量凝汽器真空的管路应(),防止出现水塞现象。
A.凝汽器方向倾斜
B.仪表安装方向倾斜
C.水平安装
参考答案:A
下列实验操作中,不正确的是 [ ]
A. 倾倒液体
B. 量筒读数
C. 点燃酒精灯
D. 滴加液体药品
In relation to the formation of a company explain:
(a) the role and duties of promoters, and how they are regulated; (5 marks)