【单选题】Which statement is wrong about "single channel" recognition system and "multi-channel" recognition system?
A.
"Single channel" recognition system is designed to be used at the entrances to buildings.
B.
Multi-channel system can identify individuals in a crowd of up to 50 people within 3 seconds.
C.
"Multi-channel" recognition system uses groups of surveillance cameras.
D.
They are two of the main products sold by Hanwang.
【简答题】A.creation B.invention C.discovery D.recognition
【多选题】TYJL-II型计算机联锁系统联锁机的热备切换只在同步状态下进行,切换条件的确定原则有( )
B.
主机通过自检测程序,发现严重故障,向备机申请切换倒机
C.
当主、备机间的同步信息出现持续性的差异,同步处理程序确定主机出现了某种影响系统控制的故障时,进行切换
【多选题】TYJL-II型计算机联锁系统联锁机的热备切换只在同步状态下进行,切换条件的确定原则有( )
B.
主机通过自检测程序,发现严重故障,向备机申请切换倒机
C.
当主、备机间的同步信息出现持续性的差异,同步处理程序确定主机出现了某种影响系统控制的故障时,进行切换
【简答题】TYJL-II型联锁系统中当切换手柄在自动位置时,如何操作可使在脱机状态下的备机与主机联机?