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举一反三
【单选题】下列哪项应考虑癌性胸水（）。
A.
胸水清澈、静置不凝固，比重＜1.016-1.018，以淋巴细胞和间皮细胞为主
B.
胸水是淡血色，红细胞，10×1012/L
C.
胸水淡黄绿色，比重，1.018，白细胞高于500×109/L，pH＜7.30，Rivalta试验阳性
D.
胸水有臭味，比重＞1.018，白细胞为10×109/L，PH＜7.00，Rivalta试验阳性
E.
血性胸水，红细胞，5.0×1012/L，胆固醇含量增高，LDH＞500IU/L
【单选题】North Pole Explorations If Santa Clans really does reside at the North Pole, he must live a lonely life．The North Pole isn't what most of us would consider a hospitable place as the average winter tem...
A.
it delivers an undisturbed home for many animals
B.
most creatures cannot adapt to its environment
C.
only Santa Claus likes living there with his reindeer
D.
only a few kinds of creatures can't bear its coldness
【单选题】癌性胸水具有下列哪项特点（）
A.
比重小于1.018
B.
蛋白含量低于3g/dl
C.
细胞总数不超过100个/dl
D.
LDH含量高于血清
E.
胸水蛋白／血清蛋白<0.5