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【多选题】
丹参根横切面可见A.
皮层宽广
B.
韧皮部狭窄，呈半月形
C.
木质部8-10束，呈放射状
D.
导管近形成层处较多，呈切向排列，渐至中央导管呈单列
E.
木质部纤维常存在于中央的初生木质部
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A.
正确
B.
错误
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