2005年2月,某轮船上发生原因不明肺炎的暴发流行。出港时船上共有350名乘客,2月份第一周(1~7日)中,船上有30人发生肺炎,其中一半很快死亡。接下来的一周内又有20人发病,但没有死亡病例,假设该病病程约为1个月。2月7日该不明原因肺炎的患病率是()。
A. 0.045
B. 0.075
C. 0.143
D. 资料不全,无法计算
E. 以上答案均不正确
查看答案
A customer is using Metro Mirror to mirror the company inventory database from an IBM System Storage DS8700 at their headquarters to a DS8300 at a remote site. Due to bandwidth concerns they are planning to change the mirroring mode to Global Mirroring. They have asked for assistance. What must be done to help the customer make the change?()
A. reboot the secondary system
B. rezone the Storage Area Network switches
C. break and re-establish the mirror relationship
D. increase the buffer credits in the HBAs to reflect the new mirror relationshi
Your company has an Active Directory domain. All servers run Windows Server 2008 R2. Your company uses an Enterprise Root certificate authority (CA). You need to ensure that revoked certificate information is highly available. What should you do()
A. Implement an Online Certificate Status Protocol (OCSP) responder by using Network Load Balancing.
B. Implement an Online Certificate Status Protocol (OCSP) responder by using an Internet Security and Acceleration Server array.
C. Publish the trusted certificate authorities list to the domain by using a Group Policy Object (GPO).
D. Create a new Group Policy Object (GPO) that allows users to trust peer certificates. Link the GPO to the domain.
男性,20岁,工人。2周来发热,体温逐渐升高到39.4℃,畏寒,无寒战,不出汗,伴食欲缺乏,腹胀,稀便,听力下降。体格检查:表情淡漠,舌背白腻苔,胸背部有数个0.5cm大小淡红色丘疹,压之褪色,肝脾肋下均可扪及。根据诊断应予以药物治疗为最佳的是()
A. 链霉素
B. 青霉素
C. 诺氟沙星
D. 异烟肼
E. 头孢拉啶
已办理车辆登记注册的纳税人申请退税时,只提供完税证明正本、公安机关车辆管理机构出具的注销车辆号牌证明即可。
A. 正确
B. 错误