皮皮学，免费搜题
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搜题
【单选题】
血管、淋巴管内表面属于:A.
上皮组织
B.
致密结缔组织
C.
肌肉组织
D.
疏松结缔组织
拍照语音搜题，微信中搜索"皮皮学"使用
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知识点：
皮皮学刷刷变学霸
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