在建筑工程中，通风与空调工程为一个分部工程。根据各类系统的功能特性不同，工程施工质量的监督和验收划分()个独立的子分部工程。
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When will the new system go into effect？
A. On Tuesday
B. On Friday
C. On Sunday
D. On Monday
Who is Elizabeth Kendall？
A customer of Hamala Inc.
B. A personnel manager at Hamala Inc.
C. A university professor
D. A famous reporter
What will the man probably do to go to Las Vegas？
A. Pay $320 for the ticket
B. Cancel his plan
Change his flight date
D. Take the first class
What is the main idea of the last paragraph？
A. Modern discoveries are the same as Darwin's.
B. Fossils are also very important in modern research.
C. Modern technology proves that Darwin was not quite fight.
D. Modern research is more advanced than Darwin's in many ways.
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