在列控I系(主系)运行正常时,当II系(备系)运行故障时,经检查发现为F486板卡上CF卡故障时,可以取下主机F486板卡上的CF插入备系再加电开启列控II系。
参考答案:对
属于鼻咽癌临床表现的是()
A.鼻塞
B.涕中带血
C.听力下降
D.颈淋巴结肿大
E.头痛
Personal firewall is a technology that helps (57) intruders from accessing data on your PC via the Internet or another network, by keeping (58) data from entering or exiting your system. Hackers do not just target national security organizations for (59) : They want your tax returns, network passwords, or bank account numbers. And you do not want the FBI kicking in your door because someone hijacked your PC to (60) in the latest denial-of-service attack on the Internet. Now that "always-on" broadband connections such as cable modems and digital subscriber line are becoming more popular, home users are at risk. Fortunately, you can protect your data. Firewalls can block (61) attacks and protect your PC from outside threats.
A. attacks B. aggression C. help D. repair