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【单选题】
沙门氏菌引起的细菌性胃肠炎的特点是?A.
起病缓慢，潜伏期长
B.
病人的腹泻大便呈血水样或洗肉水样
C.
病人不发热
D.
前期症状很轻微或没有
E.
起病急，潜伏期短，水样泻，黄色或草绿色，有恶臭
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