题目内容

男，60岁，原有肺心病史，发热、咳嗽、咳脓痰1周，神志恍惚1天。体检：紫绀，颈静脉充盈，两肺湿啰音，心率120次／分，律齐，血压12／8kPa，下肢水肿。尿蛋白（+），大便隐血（+）。如果心电图示窦性心动过速，动脉血气：pH值7．20，PaO₂7．7kPa，PaCO₂11．2kPa。下列哪项治疗不宜使用（）。

A. 持续低流量吸氧
B. 抗生素
C. 保持呼吸道通畅
D. 呼吸兴奋剂
E. 碳酸氢钠

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A Windows Azure application stores data in a SQL Azure database. The application will start an operation that includes three insert statements. You need to recommend an approach for rolling back the entire operation if the connection to SQL Azure is lost. What should you recommend？（）

A. Ensure that all statements execute in the same database transaction.
B. Create a stored procedure in the database that wraps the insert statements in a TRY CATCH block.
Create a stored procedure in the database that wraps the insertstatements in a TRANSACTION block.
D. Open a new connection to the database. Use a separate transaction scope to roll back the original operation.

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