[多选题]xGW GGSN单板倒换需要注意的事项有（）。 During switching of xGW GGSN boards, you need to pay attention to the following items: ( ).
A.禁止人工复位或插拔主用MPU或GSU单板 It is forbidden to manually reset or plug out the master MPU or GSU.
B.备用MPU上电后10分钟内禁止进行MPU主备倒换 Within 10 minutes after the slave MPU is powered on, it is forbidden to perform master/slave switchover of the MPU.
C.备用GSU单板或CPU上电后5分钟之内禁止进行该GSU单板或GSU CPU的主备倒换 Within 5 minutes after the slave GSU board or the MPU is powered on, it is forbidden to perform master/slave switchover of this GSU board or the GSU CPU.
D.禁止使用redundancy switch sc force命令强制倒换MPU单板 It is forbidden to switch over the MPU board by force by running the "redundancy switch sc force" command.