耐酸,不耐酶的广谱青霉素类 A.普鲁卡因青霉素 B.哌拉西林 C.阿莫西林 D.青霉 发布时间:2018-04-17 12:34 │ 来源:www.tikuol.com 题型:单项选择题 问题: 耐酸,不耐酶的广谱青霉素类A.普鲁卡因青霉素B.哌拉西林C.阿莫西林D.青霉素GE.美西林
题型:单项选择题 The country has already sent up three unmanned spacecraft, the most recent ______________ at theend of last March. [ ]A. has been launched B. having been launched C. being launched D. to be launched 查看答案