应用服务器的功能之一是公共服务，下列服务中是所有应用服务器都应提供的是
A) 安全服务 B) 消息服务C) 日志服务 D) 邮件服务
参考答案：A
_______ her home, Jenniffer turned on her computer and chatted on line. [ ]
A. As soon as she returned
B. After she got
C. On arriving
D. Directly she reached
钾钠定量膳食是用于诊断____。
