采用D/P结算方式，出口商办理了出口信用保险，货物按时到达目的港，质量也没有问题，但遭到进口商的拒付，出口商可以凭保险单向保险公司索赔。
In what situation would the command ip helper-address be required？（Choose the best answer.）（） ["Only when there is a duplicate IP address caused by a combination of static and dynamic IPaddress allocations","On each router that exists between the client and the server","Only when a router separates the client from the server","Only if the DHCP sever issues a DHCPNAK to the initial request","Only when the client is on the same subnet as the server","Only when the DHCP pool is out of IP addresse"]
神经症
我国水轮机型号主要由哪三部分组成？
点击某个设置了超链接的文字，希望在当前网页所在的页面中打开网页，目标选项应设置为（） [" _blank"," _self"," _http"," _URL"]
如何进行情商管理与情绪调节？
