单循环
In the event that two devices need access to a common server， but they cannot communicate witheach other， which security feature should be configured to mitigate attacks between thesedevices？（） private VLANs。 port security。 BPDU guard。 dynamic ARP inspection。 DHCP snooping。
“没有不透风的墙”一般是指信息的（）属性。
试述托达罗人口迁移模型的内容及其在解决发展中国家就业问题上的政策含义。
预制外挂墙板安装尺寸，外墙板外表面平整度允许偏差为（）。 1mm。 2mm。 3mm。 4mm。
You work as an application developer at Certkiller .com. You have been given the responsibility of creating a class named CalcSalary that will determine the salaries of Certkiller .com’s staff. The CalcSalary class includes methods to increment and decrement staff salaries. The following code is included in the CalcSalary class： public class CalcSalary { // for promotions public static bool IncrementSalary （Employee Emp， double Amount） { if （Emp.Status == QuarterlyReview.AboveGoals） Emp.Salary += Amount； return true； } else return false； } //for demotions public static bool DecrementSalary （Employee Emp， double Amount） { if （Emp.Status == QuarterlyReview.AboveGoals） Emp.Salary -= Amount； return true； } else return false； } } You would like to invoke the IncrementSalary and DecrementSalary methods dynamically at runtime from the sales manager application， and decide to create a delegate named SalaryDelegate to invoke them. You need to ensure that you use the appropriate code to declare the SalaryDelegate delegate.What is the correct line of code？（）
