当日消除缺陷的工作票应在开工前（）小时送交运行班长。
A.1
B.2
C.12
D.24
参考答案：A
The scientists all agreed that rules of physics, ______ we are all familiar, govern the world. [ ]
A. to which
B. on which
C. which
D. with which
由中国电信提供的虚拟主机服务，从业务定位来讲应该属于（）
A.NSP
B.ASP
C.ICP
D.ISP
