具有形式化特征的计算模型是用户和开发者共同理解的模型。
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()反映设备发生影响安全运行的异常,应该实时监控、迅速处理,否则可能引发事故。
A. 事故告警信号
B. 异常告警信号
C. 告知信号
D. SOE信号
Vessels should not anchor or trawl in the vicinity of pipelines and are()in the pipeline area shown on the chart.
A. Prohibit to anchor
B. Prohibited to anchor
C. Prohibited from anchor
D. Prohibited from anchoring
处理拒爆炮或残炮时可在距离拒爆炮眼或残炮眼()米以外打平行炮眼,重新装药起爆。
A. 0.2
B. 0.3
C. 0.4
Which of the following objects contains control structures that are considered the bound form of SQL statements?()
A. UDT
B. Trigger
C. Package
D. Access pla