You administer a SQL Server 2008 infrastructure. An instance runs on a computer that has eight quad-core processors and 128-GB RAM. Four different applications use the instance. The instance experiences a low number of CXPACKET waits. The instance also experiences a large number of lazy writer waits. You need to optimize the performance of the instance. What should you do?（）

A、Configure the Resource Governor. 

B、Configure the Windows System Resource Manager. 

C、Configure software non-uniform memory access (soft-NUMA).

D、Configure an increase in the maximum degree of parallelism option.

You are a database administrator for your company. The company uses a vendor company’s application that is based on a proprietary database. You query data from the application database and import the data into a SQL Server 2005 database. The application vendor provides you with a new OLE DB driver to be used when querying the application database. Company policy prohibits connections between the SQL Server database and the application database， except when querying this data. You need to provide a way to query data from the application database. What should you？（）

A、Configure a Linked Server connection to the application database.

B、Write a query that uses an OPENDATASOURCE command.

C、Write a query that uses an OPENQUERY command.

D、Configure a Remote Server connection to the application database.

一份有关吸烟与肺癌关系的病例对照研究结果显示，χ=11.20，P

A、病例组肺癌患病率明显大于对照组

B、病例组发生肺癌的可能性明显大于对照组

C、对照组发生肺癌的可能性明显大于病例组

D、对照组肺癌的患病率明显大于病例组

E、不吸烟者发生肺癌的可能性明显小于吸烟者

缺铁性贫血时骨髓铁染色示（）。

A、一般正常

B、轻度减少

C、铁消失

D、轻度增多

E、明显增多

You are a database administrator for your company. The company uses a SQL Server 2005 application. Each night， data is imported into a database， and the database is then set to be read-only. During business hours， users run predefined and ad hoc queries. You need to monitor the servers performance during the day. What are two possible ways to achieve this goal？（）

Use the Lock Waits/sec performance counter.

Use the Number of Deadlocks/sec performance counter.

Use the Transactions/sec performance counter.

Use the Full Scans/sec performance counter.

Use the Batches/sec performance counter.

用一套心理健康调查表对50个恶性肿瘤患者与50个非恶性肿瘤进行调查，结果恶性肿瘤患者组心情抑郁者的比例高于非恶性肿瘤患者组（P

A、两组间本身就存在差异

B、恶性肿瘤引起抑郁

C、抑郁导致恶性肿瘤

D、抑郁可能受抗肿瘤药物作用的影响

E、这可能是一个偶然的联系