题目内容

散打的禁击部位是().().().

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下列各组物质中,属于同一种物质的是()

A. 冰、干冰
B. 煤气,沼气
C. 石灰石、生石灰
D. 乙醇,酒精

所谓()即是为了使信号便于传输、减少干扰和易于放大,使一种波形参数按另一种信号波形变化的过程。

A. 解调
B. 调制
C. 载波
D. 调制波

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

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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