标题栏内列出了零件的()、材料、比例、设计或生产单位等。
A.规格
B.数量
C.名称
D.种类
参考答案:C
The university offered several more courses for the purpose of furthering the career aspirations of its students.
A.ambitions
B.achievements
C.advantages
D.advances
一次水垢与二次水垢有何区别?