Which two statements are true about a job chain?()
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
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根据《票据法》的规定,关于汇票的表述正确的是()。
工地施工混凝土当最低气温低于()时,混凝土工程应按冬季施工办理。
A. 0℃
B. +5℃
C. -3℃
D. -10℃
速滑项目中,换道时,原内道运动员应主动给原外道运动员换道,若这时发生冲撞,将取消原在内道选手的比赛资格。
A. 正确
B. 错误