【正确答案】
【答案解析】To: Head of Department
From: Char Shui
Date: 3 April, 2005
Subject: Diskflow pump
I (have) read about the Diskflow pump in [name of source, e, g, the Pump Times].
It needs very little maintenance and could save the company a lot of money.
If you want/are interested, I could [source of further info, e. g. write to Diskflow Company for more information].