货物列车挤道岔后脱轨（未造成更严重的后果），该事故为（）事故。
A.一般D类
B.一般C类
C.一般B类
D.一般A类
参考答案：B
David suddenly realized that the waiter was the same man _____ face he had seen in a painting many years ago．
A．which
B．that
C．of whom
D．whose
政府采购的方式不包括( )。
A．公开招标
B．邀请招标
C．单一来源采购
D．议标
