题目内容

What happens during the 'load' phase of a data ETL system?

A. Source data is read from the existing system
B. Source data is uploaded into the transformation software
C. Transformed data is written into a target database
D. Transformed data is transmitted to data visulisation software

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Which of the following is found at the very bottom of an organisation's business intelligence stack?

A. Web
B. ETL system
C. IT infrastructure
D. Legacy systems

Which elements of a business intelligence stack provide storage capacity for big data?

A. Warehouse management
B. IT infrastructure
C. Dashboards
D. ETL systems

In terms of a business intelligence stack, what system allows managers without specialist IT or analytical expertise to drill into and view data in different ways to identify hidden relationships?

A. ETL systems
B. Data warehouse
C. Online analytical processing, data mining, query and reporting systems
D. CRM systems

膜状凝结的影响因素包括()

A. 不凝性气体
B. 蒸气的流速
C. 蒸气过热
D. 凝结壁面的形状

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