图A为某河段平面图,图B为图A中河流某处的河道横剖面,图C示意图A

A为某河段平面图,图B为图A中河流某处的河道横剖面,图C示意图AM湖水量流入流出的月份分配。读图完成下列各题。

17. A中甲、乙、丙、丁四处的河道横剖面,最符合图B的是(    

A.                B.            

C.               D.

18. M湖平均水位最低的月份是(    

A1             B4         

C6             D10

答案

BB

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