西安邮电大学图书采购采用哪些方式？（） ["目录征订","现场选购","读者推荐","以上全是"]
在开发质谱仪方面，田中所具有的优势是（）。 ["激光领域的优势","计算机领域的优势","医学领域的优势","人力资源的优势"]
A system administrator installed a new switch using a script to configure it. IP connectivity was tested using pings to SwitchB.Later attempts to access NewSwitch using Telnet from SwitchA faileD.Which statement is true?（） ["Executing password recovery is required.","The virtual terminal lines are misconfigured.","Use Telnet to connect to RouterA and then to NewSwitch to correct the error.","Power cycle of NewSwitch will return it to a default configuration."]
烧结料层的露点温度为（）。 ["30℃","55℃","75℃"]
按国家标准《火灾报警控制器》（GB4717―2005）的有关要求采用观察、仪表测量等方法逐个对控制器进行功能检查并记录，在故障状态下，使任一非故障部位的探测器发出火灾报警信号，控制器应在（）min内发出火灾报警信号，并应记录火灾报警时间。 ["1","2","3","4"]
《混凝土结构设计规范》是如何考虑弯矩、剪力、和扭矩共同作用的？βt 的意义是什么？起什么作用？上下限是多少？
