Which two statements are true about a job chain? (Choose two.)
A. 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
原文：http://www.cnblogs.com/Babylon/p/7843478.html