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省、自治区、直辖市人民政府根据实际情况，可以将城镇居民社会养老保险和新型农村社会养老保险合并实施。

A. 正确
B. 错误

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You are creating a view to join the Customers and Orders tables in a SQL Server 2005 database. You need to ensure that the view cannot be affected by modifications to underlying table schemas. You want to accomplish this goal by using the least possible amount of overhead. What should you do？（）

A. Create CHECK constraints on the tables.
B. Create a DDL trigger to roll back any changes to the tables if the changes affect the columns in the view.
Create the view， specifying the WITH SCHEMABINDING option.
D. Create the view， specifying the WITH CHECK option.

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