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问题 多项选择题

一般来说，依据4种方法对3G用户的规模进行预测，分别是（）

A.目标客户迁移分析法

B.3G商业计划类比预测法

C.参考GPRS预测法

D.运营商类比法

答案

参考答案：A, B, C, D

选择题

—Mr Wang, I have trouble ______ the text.        

—Remember______it three times at least.        [ ]

A. to understand, reading        

B. understand, reading        

C. understanding, to read
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单项选择题

Prior to the UML, there was no clear leading （） language. Users had to choose from among many similar modeling languages with minor differences in overall （） power. Most of the modeling languages shared a set of commonly accepted concepts that are expressed slightly differently in various languages. This lack of （） discouraged new users from entering the OO market and from doing OO modeling, without greatly expanding the power of modeling. Users longed for the industry to adopt one, or a very few, broadly supported modeling languages suitable for （） usage. Some vendors were discouraged from entering the OO modeling area because of the need to support many similar, but slightly different, modeling languages. In particular, the supply of add-on tools has been depressed because small vendors cannot afford to support many different formats from many different （） modeling tools. It is important to the entire OO industry to encourage broadly based tools and vendors, as well as niche products that cater to the needs of specialized groups.

there was no clear leading （） language

A．programming

B．modeling

C．formal

D．intelligent
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