问题
单项选择题
关于原型化准则，下列说法不正确的是()。
A．大多数的应用系统都能从一个小的系统结构集合导出
B．多数系统使用一个常用和熟悉的功能集合
C．大多数的输入编辑能从一个小的编辑模型集中导出
D．应用系统的报表生成是基于一个四步的报表模型
答案
参考答案：C
解析：鼠标器一般可分为机械式、光电式和光机式。
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关于原型化准则，下列说法不正确的是()。
A．大多数的应用系统都能从一个小的系统结构集合导出
B．多数系统使用一个常用和熟悉的功能集合
C．大多数的输入编辑能从一个小的编辑模型集中导出
D．应用系统的报表生成是基于一个四步的报表模型
参考答案：C
解析：鼠标器一般可分为机械式、光电式和光机式。
| 阅读短文，然后在下面的表格中完成内容提要，每空不超过3个单词。 | |||||||||||||||
| New Energy in the Twenty-first Century Energy from the wind Wind is a kind of clean energy, and there is lots of it, but, if there's no wind, there is no wind energy. Energy from the water When water moves from a high place to a lower place, it can make electricity (电) without pollution. However, people have to build dams (水坝) to use this energy, and building dams is very expensive. Energy from the earth There is heat in the rocks under the earth. Scientists use the heat to make geothermal (地热的) energy. This kind of energy is cheap, but it is only possible in a few places in the world. Energy from the sun Solar panels (太阳电池板) on the roofs of houses can turn energy from the sun into electricity. Solar power is clean and plentiful (丰富的), but when the weather is bad. It doesn't work. | |||||||||||||||
New Energy in Twenty-first Century
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