科学家最新研究表明，溶菌酶消灭细菌的机理是：溶菌酶有“颚”，能够抓住并咬穿细菌的细胞壁，进而消灭细菌．据此判断下列说法正确的是_刷题宝

题干

科学家最新研究表明，溶菌酶消灭细菌的机理是：溶菌酶有“颚”，能够抓住并咬穿细菌的细胞壁，进而消灭细菌．据此判断下列说法正确的是（　　）

A：溶菌酶和皮肤黏膜均属于第二道防线

B：溶菌酶消灭细菌的过程是非特异性免疫

C：溶菌酶对入侵的细菌不具有识别功能

D：溶菌酶消灭细菌具有特异性

上一题下一题 0.0难度选择题更新时间:2013-10-15 02:57:40

答案(点此获取答案解析）

B

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Dear Diary,

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At three o'clock in the afternoon, my cousin Sarah asked me to see a film. I was happy. But I didn't find my pet kitten. Sarah and I looked for him here and there. Guess! Where was he? He was in my cap! When we came to the cinema, it was about four thirty. What a bad day!

Mary

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