目前使用的氧传感器有（）。 氧化锆（ZrO2）式。 氧化钛（TiO2）式。 宽量程氧传感器。 空燃比式。
《铁路旅客列车消防安全管理规定》不吸烟车厢应有（）标志，乘务人员要对在车厢内吸烟的旅客进行劝阻，提醒旅客不得乱扔烟头火种。 禁止吸烟。 警示。 安全。 卫生。
控制油浆相对密度为（）时，可减小结焦产生 小于1。 大于1。 小于1.1。 大于1.1。
A network administrator wants to ensure that only the server can connect to port Fa0/1 on a Catalyst switch. The server is plugged into the switch Fa0/1 port and the network administrator is about to bring the server online. What can the administrator do to ensure that only the MAC address of the server is allowed by switch port Fa0/1？ （） Configure port Fa0/1 to accept connections only from the static IP address of the server.。 Employ a proprietary connector type on Fa0/1 that is incompatible with other host connectors.。 Configure the MAC address of the server as a static entry associated with port Fa0/1.。 Bind the IP address of the server to its MAC address on the switch to prevent other hosts from spoofing the server IP address.。 Configure port security on Fa0/1 to reject traffic with a source MAC address other than that of the server.。 Configure an access list on the switch to deny server traffic from entering any port other than Fa0/1.。
《铁路旅客列车消防安全管理规定》吸烟处应有明显标志并配备（），地板和壁板应保持完好，无孔洞和缝隙。 打火机。 火柴。 痰盂。 烟灰盒。
多缴款超过180天未能处理时，转运营（）部门列营业外收入。
