溶出性抑菌产品,除必须达到相应的微生物指标外,对大肠杆菌和金黄色葡萄球菌的抑菌率须达到多少()。
A.>40%
B.>70%
C.>80%
D.>90%
E.>26%
参考答案:E
根据下列句子及所给汉语注释,写出空缺处各单词的正确形式,每空只写一词。
小题1:There are more than two _________(千) students in our school.
小题2:He didn’t go to bed ____________(直到)his father returned home.
小题3:My mother was busy cooking in the ____________(厨房).
小题4:It is ______________(可能) for us to finish the work in such a short time .
小题5:Tonny has been ______________(收集) seashells for four years..
慢性支气管炎主要病因有以下几种
A.感染因素
B.吸烟
C.空气污染
D.过敏因素
E.以上都是