利用色阶命令，调整亮度和对比度，可以轻松提高图像的清晰度。
金属
在调节图层透明度时，当“不透明度”值是100%的时候，会显示成完全不透明的状态。
You are the network administrator for the Paris branch office of Fourth Coffee.The Paris office has a Windows Server 2003 DNS server named Server10. Server10 hosts a DNS primary zone named fourthcoffee.com. All computers in the Paris office are configured to use Server10 as their preferred DNS server. The Berlin branch office of Fourth Coffee has a UNIX DNS server named Server11. Server11 hosts a primary zone named engineering.fourthcoffee.com. The refresh interval of the engineering.fourthcoffee.com zone is set to 24 hours. In the Berlin office， a firewall filters all incoming network traffic from other offices. A rule on this firewall prevents all computers from the Paris office network， except Server10， from performing DNS lookups against Server11.There is a business requirement that no delay should occur between the time that a new record is created in the engineering.fourthcoffee.com zone and the time that the record can be resolved from any computers in the Paris office. All computers in the Paris office must be able to resolve names in the engineering.fourthcoffee.com namespace.You need to configure DNS on Server10 to meet the requirements. What should you do？（） Set up a stub zone named engineering.fourthcoffee.com.。 Set up conditional forwarding to Server11 for the engineering.fourthcoffee.com namespace.。 In the fourthcoffee.com zone， set up a delegation to the engineering.fourthcoffee.com zone on Server11.。 Set up a secondary zone named engineering.fourthcoffee.com that has Server11 as master.。
合资有限公司协议
治疗指数定义为（）
