包括样品检验和药品标准复核的检验属于
A．抽查检验B．注册检验C．指定检验D．复验E．委托检验
参考答案：B
—Could you tell me __________ yesterday?
—Because my bike was broken on my way here.
A．why you came late
B．why do you come late
C．why you come late
D．why did you come late
在居民区处，加强线最大弛度时距地面的高度不得小于（）。
A、5m
B、7.5m
C、6m
D、7m
