女性,59岁,糖尿病,1天前感冒后出现发热、恶心,呕吐。查体:体温39℃,尿酮体(++++),该患者呕吐是由于()
A. 发热刺激延髓呕吐中枢
B. 发热刺激延髓化学感受器触发区
C. 代谢产物刺激延髓化学感受器触发区
D. 代谢产物刺激延髓胃肠道化学感受器
E. 代谢产物刺激延髓呕吐中枢正确
某人投保了人身意外伤害保险,在回家的路上被汽车撞伤送往医院,在其住院治疗期间因心肌梗塞而死亡。那么,这一死亡事故的近因是()
A. 被汽车撞倒
B. 心肌梗塞
C. 被汽车撞倒和心肌梗塞
D. 被汽车撞倒导致的心肌梗塞
You create a Web application. You need to turn on Tracing for a page that is not performing well. You must store the trace information in a database for reporting and trending. Which two actions should you perform? ()
Add a TraceContextEventHandler to the Trace.TraceFinished event to add the trace records into the database.
B. Add a system.diagnostics section to the Web.config file. Then add a listener to the new section.
C. Use the System.Diagnostics.Trace object to connect to a database. Then insert the trace records.
D. In the Page_Load for the page, place the Trace.Write call into a SQL INSERT statement.
综合自动化系统由()组成。
A. 数据识别层(DAU层)
B. 微机保护与测控层(PC层)
C. 变电站主机层(SC层)
D. 中央计算机层(CC层)