潜水电泵停机后,要每隔()运行一次。
A. 7d
B. l0d
C. 14d
D. 30d
关于EDI与E—MAIL的关系,下面叙述错误的是().
A. 从通信角度看,EDI和E—MAIL是相似的,但又有明显区别.
B. E—MAIL和EDI的应用对象不同,EDI的对象更形式化、规范化.
C. EDI和E—MAIL的不同是在低层协议中体现出来的.
男性,12岁,因体格检查发现心脏杂音就诊,平时无不适主诉,活动能力良好,体格发育与同龄儿童相仿。体格检查:无发绀,胸骨左缘第3~4肋间全收缩期杂音3级,肺动脉瓣第二音亢进,心前区可扪及收缩期震颤。为进一步明确诊断,应首选哪项检查项目()
A. 心电图
B. 胸片
C. 超声心动图
D. 心导管造影
E. 磁共振
You have an Exchange Server 2003 organization. You install a new Exchange Server 2010 server in the organization. You need to ensure that you can modify the default e-mail address policy by using the Exchange Management Console (EMC) What should you do?()
A. Run the Set-EmailAddressPolicy cmdlet.
B. Run the Update-EmailAddressPolicy cmdlet.
C. From the Exchange System Manager, modify the properties of the default recipient policy.
D. From the EMc, select the E-mail Address Policies tab, right-click Default Policy, and then click apply.