与细菌核糖体50S亚基结合，阻止肽链延长的药物
A．庆大霉素B．青霉素C．磺胺甲噁唑D．林可霉素E．氧氟沙星
参考答案：D
—Did you enjoy yourself during the holiday?
—Yes, we had ______ in Beijing.[ ]
A. a quite good time
B. quite a good time
C. very a good time
D. very good time
《设备设施及仪表清册》和《能耗定额标准清单》是项目及公司能耗管理的基础业务数据库，项目（）维护和更新至少一次，设备管理部负责审核和稽核工作。
