A chain bridle is used when towing astern because it（）.

A.is easy to connect

B.provides an effective catenary and absorbs shock due to its weight

C.makes rigging a swivel unnecessary

D.prevents the tow from yawing by the drag of the chains in a seaway

适用普通程序审理的民事案件，应当在规定时间内审结。有特殊情况的，可以报请（）批准后延长期限，最长不超过6个月。