在冷却水系统中生长的微生物中，藻类需要光能，而其它微生物的繁殖不需要光能。
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（）these children know the answer.
A. Most
B. Some
C. Most of
D. Few
Which three functions are performed by the SQL Tuning Advisor?（）
A. Building and implementing SQL profiles
B. Recommending the optimization of materialized views
Checking query objects for missing and stale statistics
D. Recommending bitmap, function-based, and B-tree indexes
E. Recommending the restructuring of SQL queries that are using bad pla
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