青年学生，失恋半年来，学习成绩明显下降，孤僻少语，生活懒散，对老师、家长批评持无所谓态度，还经常照镜子，并且自言自语，说镜子里自己的脸变形了。该患者没有的症状是（） ["情感平淡","意志减退","人格障碍","感知综合障碍","性格改变"]
试述注意的种类？
For lasers with tightly controlled wavelengths， approximately how far apart are the centers of adjacent wavelengths when 100 GHz spacing is used in a DWDM system？ （） [" 0.4 nanometers"," 0.6 nanometers"," 0.8 nanometers"," 1.2 nanometers"," 1.6 nanometer"]
If node 2 is accepting line timing from node 1, node 2 will send （）to node 1 as its SSM message. [" ESF"," PRS"," DUS"," SMC"," B8ZS"]
Which tool can be used to create and configure listeners to receive client connections？（） ["Oracle Net Manager","Oracle Net Control Utility","Oracle Net Configuration Assistant"]
要编写高质量的程序，判断程序质量的首要标准是程序的（），要保证程序在多次反复使用过程中不发生错误，应该保证程序的（）。
