What is the purpose of the project launched by Nancy?
A. To invite authors to guide readers. B. To encourage people to read and share. C. To involve people in community service. D. To promote the friendship between cities.
参考答案:
甲氧苄啶的抗菌作用机理是:( )
甲氧苄啶的抗菌作用机理是:( ) A. 破坏细菌细胞壁 B. 抑制二氢叶酸还原酶 C. 抑制菌体蛋白质合成 D. 改变细菌胞浆膜通透性 E. 抑制二氢叶酸合成酶