[填空题] 每一个使用电子邮件系统的用户都需要有属于自己的（），它代表电子邮箱所在。

下列色相环中哪种色相关系对比最强烈，配色能给人饱满、活跃、生动、刺激的强烈感受（） ["类似色相","临近色相","互补色相","对比色相"] 心理学研究的基本原则是（） ["客观性、系统性、实验性","实验性、客观性、发展性","系统性、发展性、实验性","客观性、发展性、系统性"] Refer to the exhibit. EIGRP had converged in AS 1 when the link between router R1 and R2 went down. The console on router R2 generated the following messages: *Mar 20 12:12:06: %DUAL - 5NBRCHANG E: IP - EIGRP 1: Neighbor 10.1.4.3 (Serial0) is down: stuck in active *Mar 20 12:15:23: %DUAL -3- SIA: Route 10.1.1.0/24 stuck - in - active state in IP - EIGRP 1. Cleaning up The network administrator issued the show ip eigrp topology active command on R2 to check the status of the EIGRP network. Which statement best describes the reason for the error messages?（） [" Incorrect bandwidth configuration on router R3 prevents R2 from establishing neighbor adjacency."," Incorrect bandwidth configuration on router R 5 prevents R2 from establishing neighbor adjacency."," Router R3 did not reply to the query about network 10.1.1.0\/24 sent by router R2 ."," Router R5 did not reply to the query about network 10.1.1.0\/24 sent by router R2 ."] Your company has a corporate policy that prohibits storing a customer’s credit card number in any corporate database. However， users have complained that they do NOT want to re- enter their credit cardnumber for each transaction. Your management has decided to use client-side cookies to record the user’scredit card number for 120 days. Furthermore， they also want to protect this information during transit fromthe web browser to the web container； so the cookie must only be transmitted over HTTPS. Which codesnippet creates the "creditCard" cookie and adds it to the out going response to be stored on the user’s webbrowser？（） ["","","",""] 煤塔上，回转式皮带布料机在下煤时的回转方向为（）。 ["顺时针","逆时针","二者都可以实现"] 每一个使用电子邮件系统的用户都需要有属于自己的（），它代表电子邮箱所在。