A cluster indicates that a remote site has failed. What facilities exist in HACMP/XD：HAGeo to ensure that the failure is not just a TCP/IP communication failure？（） [" Electronic Service Agent software provides a redundant heartbeat between sites."," A non-IP network and Dial Back Fail Safe provide redundant heartbeats between sites."," The GeoMirror Devices provide a link validation facility that guarantees the validity between sites."," The Site Notification Daemon maintains a heartbeat between sites via short haul Modems\/line drivers and dark fibre."]
认为教育起源于动物本能活动的观点属于（） ["心理起源论","劳动起源论","需要起源论","生物起源论"]
What do the entries in the /proc directory represent？（） ["They are the decimal numbers corresponding to the active process IDs.","They are the decimal numbers corresponding to the gid of the system group.","They are the decimal numbers corresponding to the block IDs of the boot sector.","They are the decimal numbers corresponding to the inodes of the system directories."]
采用双管供风的客车，总风管系不能正常供风时，须（）。 ["改单管供风状态","甩车","组织修复","关闭生活用风"]
A system administrator found a process on the server that should be stopped. What command can be used to list all the signal actions defined for this process？（） ["ps","pstat","portmap","procsig"]
DNA聚合酶
