城乡规划主管部门核发的规划许可证属于行政许可的（）许可类型。

A.普通

B.特许

C.核准

D.登记

As one of the tools and techniques of activity sequencing, a lead （）.

A．directs a delay in the successor activity

B．could be accomplished by a finish to-start relationship with a delay time

C．means the successor activity cannot start until after the predecessor is completed

D．allows an acceleration of the successor activity