题目内容
绵马贯众叶柄基部横切面分体中柱的数目和排列方式是
2021-12-20
A.15～24个，环状排列
B.5～13个，环状排列
C.2个，八字形排列
D.3～4个，环状排列
E.30余个，断续排列呈双卷状
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