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【单选题】
关于输血,下列说法错误的是A.
必须根据医嘱采集血标本，一次只为一个病人采集标本
B.
血液内可加入地塞米松，以减低输血反应的发生率
C.
输血前，必须认真检查血液制品的质量
D.
输血前后，需输入少量生理盐水
E.
输血过程中，滴速先慢后快
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A.
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