Which two statements are true about the Automatic Diagnostic

【名词&注释】

注意事项(points for attention)、真空度(vacuum)、大气压力(atmospheric pressure)、输送机(conveyor)

[多选题]Which two statements are true about the Automatic Diagnostic Repository (ADR)?（）

A. The ADR base keeps all diagnostic information in binary format
B. SQL*Plus provides the ADRI script, which can be used to work with ADR
C. The ADR can be used for problem diagnosis only when the database is open
D. The ADR can be disabled by settting the DIAGNOSTIC_DEST parameter to null
E. The ADR can be used for problem diagnosis even when the database instance is down
F. The ADR base is shared across multiple instance

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学习资料：

[单选题]若大气压力为0.1MPa，容器内的压力比大气压力低0.004MPa，则容器内的（）。

A. 表压力为0.096MPa
B. 绝对压力为0.096MPa
C. 真空度为0.104MPa
D. 表压力为0.104MPa

[单选题]胶带输送机^(conveyor)司机应熟悉各种（），操作时必须严格按信号执行。

A. 信号
B. 操作
C. 规定
D. 注意事项

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