单选题:关于胸腔漏出液的描述,下列不正确是(  )

题目内容:
关于胸腔漏出液的描述,下列不正确是(  ) A.外观无色透明或淡黄色
B.比重<1.018
C.粘蛋白定性试验阳性
D.蛋白定量<20~30g/L
E.细胞数常<100×106/L,以淋巴细胞和间皮细胞为主
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