正常人痰液的参考值是() ["脓痰","偶有少量白色黏液样痰","可见少量嗜酸性粒细胞","可见大量纤毛柱状上皮细胞","可见少量红细胞"]
下列关于培养基的制备描述正确的是()。 ["A.斜面培养基的长度不超过试管的2\/3","B.双糖铁培养基底层至少有1cm的直立段","C.除M-H平板外,其他平板的厚度一般为3mm","D.配制完成的培养基pH应与规定的pH相差在±0.2之内","E.一般平板培养基在2~8℃可贮存2周"]
如何进行城市犯罪的控制与治理呢?
漏出液LD/血清LD的比值常() ["<0.6","<0.5","<0.4","<0.3","<0.1"]
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