根据《中华人民共和国建筑法》的规定，已批准开工报告的建筑工程，因故不能按期开工超过( )个月的，应当重新办理开发报告的批准手续。

A．1

B．3

C．6

D．9

When carrying out a parallel track search pattern，the course of the search units should normally be which of the following（）.

A.In the same direction as the anticipated drift

B.In the opposite direction of the anticipated drift

C.Perpendicular to the line of anticipated drift

D.Downwind