工业建筑的分类中多层厂房指层数在( )层及以上的厂房。
A.1
B.2
C.3
D.6
参考答案:B
—Mom, I'm tired of working in this company. I want _____ job.
—I don't agree with you. It's not easy to get a job like this.[ ]
A. one
B. a
C. an
D. another
二极管的功能是()。
A.开关
B.可以表示数字
C.导电好
D.导热好