市盈率指标主要用来评估股票的投资价值与风险。如果某股票的市盈率为40，则意味着该股票的投资收益率为2.5%。
在“曲线”命令对话框中，左下角的一点能否移至最左上角，使曲线水平？（） 不能。 能。 不一定。 很难判断。
画笔工具的用法和喷枪工具的用法基本相同，其中也有不同的部分，下列选项中不同的是（）选项。 笔触。 模式。 湿边。 不透明度。
You are the network administrator for your company. The network consists of a single Active Directory domain. The network contains 10 domain controllers and 50 servers in application server roles. All servers run Windows Server 2003. The application servers are configured with custom security settings that are specific to their roles as application servers. Application servers are required to audit account logon events， object access events， and system events. Application servers are required to have passwords that meet complexity requirements， to enforce password history， and to enforce password aging. Application servers must also be protected against man-in-the-middle attacks during authentication. You need to deploy and refresh the custom security settings on a routine basis. You also need to be able to verify the custom security settings during audits. What should you do？ （） Create a custom security template and apply it by using Group Policy.。 Create a custom IPSec policy and assign it by using Group Policy.。 Create and apply a custom Administrative Template.。 Create a custom application server image and deploy it by using RIS.。
一个目标成为好的职业生涯目标需要具备哪些条件（）。 具体明确。 可能实现。 可以衡量。 有挑战性。
膜反应器是（）的酶反应器
