病毒在结构上的特点是 ( ) A．无细胞结构 B．无细胞

病毒在结构上的特点是 ( )

A．无细胞结构 B．无细胞壁

C．无液泡和叶绿体 D．无成形的细胞核

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病毒在结构上的特点是 ( ) A．无细胞结构 B．无细胞

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