能产生自溶酶的细菌是() A.肺炎链球菌 B.化脓性链球菌 C.金黄葡萄球菌 D.肠 发布时间:2017-06-20 01:14 │ 来源:www.tikuol.com 题型:单项选择题 问题: 能产生自溶酶的细菌是()A.肺炎链球菌B.化脓性链球菌C.金黄葡萄球菌D.肠球菌E.B群链球菌
题型:单项选择题 My father and my mother have been married for 30 years, and never once ____ with each other.A. have they quarreled B. they have quarreled C. did they quarrel D. had they quarreled 查看答案
题型:单项选择题 某电厂有两台300MW机组,采用发电机变压器组向500kV系统送电。主接线为一个半断路器接线时,为使二次接线运行调试方便,下列安装单位的划分不正确的是( )。A.当为线路一线路串时,每条出线作为一个安装单位,每台断路器为~个安装单位;B.当为线路…变压器串时,变压器、出线,每台断路器各为一个安装单位;C.当线路接有并联电抗器时,并联电抗器可单独作为一个安装单位,也可和线路合设一个安装单位;D.每台断路器及变压器均可作为独立的安装单位。 查看答案