谁能帮我看看这封英语书信有什么错误?

题目

谁能帮我看看这封英语书信有什么错误?
TO:Metro power Employees
FROM:Susannah Beech,Hr Administrator
SUBJECT:Ways to improve your response to technology failures
Date:22 September 2007
Dear Metro Employees:
There is always a chance of racing toward a deadline and suddenly having equipment fall.The following includes a few proposed suggestions to help you stave off,and cope with,technical equipment and system failures:
◎ Stay cool.There are many technical failures so they are commonplace in business; and it is likely that your bosses and co-workers will understand that you’re having a problem and why.
◎ Practice preventive maintenance:Use cleaning cloths and sprays regularly,liquids and foods should be kept away from keyboards and printers; and you should make sure systems are shut down when you leave at night.
◎ It is important for faster repair assistance to promptly report computer failures to Bart Stone assistant director of information services ext,2238,who will get

答案

结尾需Yours sincerely
开头需Dear xxx
收信人地址
Dear XX,
正文
Sincerely yours,
XX
写信人地址