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青岛黄海职业学院2006—2007第一学期期末考试《机电英语》试卷A
ⅠMatch the items listed in the following two columns（将下列两栏中意思一致的词语搭配起来。将右栏词语前的字母序号添在左栏词语前面的括号内。每小题2分，共20分）
1.( ) software A. the programs used to direct the operation of a computer
2.( ) GHz B. serving to prevent or hinder
3.( ) carbon dioxide C. which includes roads, schools and power stations etc.
4.( ) a signal generator D. a device producing special signal
5.( ) infrastructure E. occurring or appearing at regular intervals
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