在负压罐内，原油在稳定下的饱和蒸汽压（）系统压力，轻组分才能从原油中回收。
A. 大于
B. 等于
C. 小于
D. 小于或等于
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（）是由上位子房发育形成的真果；食用部分为肥大多汁的假种皮。
建筑防水工程的资质等级为二级的企业可以承担各类房屋建筑防水工程的施工。（）
A. 正确
B. 错误
当输气站计量系统出现故障时，SCADA系统中将会出现报警，其中中控SCADA系统中流量计画面显示的报警有哪三种状态报警？
What is the output of this command?（）
A list of files that require a backup within 3 days
B. A list of files requiring more than 3 days of archivelogs to apply
C. A list of files that RMAN recommends be backed up only once in every three days, based on low volatility
D. A list of files for which a backup as already been performed in the last three days and which is required to be backed up again based on the high number of transactions performed on them
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