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问题
多项选择题 X型题
杂质限量常用的表示方法有()
A.mg
B.ng
C.mol/L
D.百分之几
E.百万分之几
答案
参考答案：
D, E
判断题
判断正误打“√”或“×”。
( ) 1.
My family lives in Canada.
( ) 2.
I am a student.
( ) 3.
My father is a businessman.
( ) 4.
My mother is a teacher.
( ) 5.
We are a happy family.
查看答案
判断题
黄芪蜜炙后可增强补中益气作用。
查看答案
My family lives in Canada.
I am a student.
My father is a businessman.
My mother is a teacher.
We are a happy family.