颗粒岗位质量检查项目有（）
A.粘合剂浓度
B.筛网
C.含量、水份
D.黑杂点
参考答案：A, B, C
When you go outing with your sisters, you must see to ____ that they are safe.[ ]
A. everything
B. it
C. them
D. yourself
What Normal Form is the student table shown ( ) student table (s _ id, s _ name, s _ sex, s _ old, depart _ id, depart _ name) s _ id→s _ name, s _ sex, s _ old, depart _ id depart _ id→depart _ name
A．1NF
B．2NF
C．3NF
D．BCNF
