患者,男性,68岁。慢性支气管炎病史。近5天咳嗽咳痰加重,痰量增多,有较多黄脓痰,活动后气促明显。体温38.1℃,WBC10.9×109/L,中性83%。应选用下列哪种抗生素()
A. 庆大霉素800U,肌肉注射,每日2次
B. 头孢呋辛酯片,0.5g,口服,每日2次
C. 头孢他啶(复达欣)针,29,静脉点滴,每日2次
D. 泰能针(亚胺培南/西司他汀),19,静脉点滴,每日3次
E. 头孢哌酮钠/舒巴坦钠针,29,静脉点滴,每日2次
关于道德权利,下述提法中正确的是()
A. 道德权利都是法律权利
B. 道德权利是尽道德义务的前提
C. 道德权利是法律权利的后盾
D. 道德权利与道德义务是对应的
E. 道德权利是依法行使的权力和应享受的利益
用同一种限制酶切割载体和目的基因后进行连接,连接产物会含大量自身环化载体,采用下列哪种酶处理,可防止载体自身环化()
A. 核酸内切酶
B. 核苷酸激酶
C. 核酸外切酶
D. 末端转移酶
E. 碱性磷酸酶
Your network consists of two subnets named Subnet1 and Subnet2. You have a server named Server1 that runs Windows Sever 2003 Service Pack 2 (SP2). Server1 is located on Subnet1. Users from Subnet1 report poor performance when they connect to Server1. Users from Subnet2 report that they are unable to connect to Server1. You monitor both network segments and discover a large number of NetBIOS broadcasts on both network segments.You need to reduce the number of broadcasts on the network. What should you deploy?()
A. a DHCP Relay Agent
B. a WINS server
Connection Point Services(CPS)
D. Simple TCP/IP Services on all computer