大黄根茎髓部呈星点状的异常维管束为() A.外韧型 B.周木型 C.双韧型 D.周韧 发布时间:2018-02-27 10:38 │ 来源:www.tikuol.com 题型:单项选择题 A型题 问题: 大黄根茎髓部呈星点状的异常维管束为()A.外韧型B.周木型C.双韧型D.周韧型E.环型
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