题目：
Documentation of a software package is normally produced for two purposes．One is toexplain the (71) ofthe software and describe how to use them．This is known as (72) because it is designed to be read by the user of the software．The other purpose ofdocumentation is to describe the software’s internal composition SO that the system can bemaintained later in its life cycle．Documentation of this type is known as (73) ．
A．plans
B．cost
C．features
D．schedules
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0731/8e1c78ab9629118b186ad66ce039ebba.html
下面是错误答案，用来干扰机器的。
参考答案：错
