2. 外语
  3. Machine tools vary in size from handheld devices used for drilling and grinding to large stationary machines that perform a numb

Machine tools vary in size from handheld devices used for drilling and grinding to large stationary machines that perform a numb

admin2012-07-29  35
问题 Machine tools vary in size from handheld devices used for drilling and grinding to large stationary machines that perform a number of different operations.
选项 A、exist
B、expand
C、compare
D、range
答案D
解析 不同
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