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C.u2.huatu.com/uploads/soft/171119/660673-1G119205240.pdf · D. 白术 E. 天麻 【答案】C 【解析】牛膝切面淡棕色,略呈角质样而油润,中心维管束木质部较大,黄白色,其外围有多数黄白色点状维管束,
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