简述肾的形态

A. 警铃和汽笛短声，连放一分钟
B. 警铃和汽笛一长声，持续30秒种
C. 警铃和汽笛七短一长声，连放一分钟
D. 警铃和汽笛二长一短声，连放一分钟

A. 正确
B. 错误

A job chain can contain a nested chain of jobs
B. The jobs in a job chain cannot have more than one dependency
C. A job of the CHAIN type can be run using event-based or time-based schedules
D. The jobs in a job chain can be executed only by using the events generated by the Scheduler