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Electronic Wizard has invented a very compact hand-held extremely powerful electric vacuum pump, primarily for applications in computer manufacturing. They also plan to make a version with a filter for cleaning surfaces, and market this as a cleaning device to homeowners. This hand-held electric vacuum pump will only be able to clean small areas, so homeowners would still need to own a conventional vacuum cleaner.

Which of the following, if true, provides the strongest grounds for a prediction that homeowners will buy the hand-held electric vacuum pump cleaner?
  • ASome types of household dirt do not require a tremendous amount of power to be picked up. 分析该选项
  • BMany homeowners have older conventional vacuum cleaners that need replacement. 分析该选项
  • CSome household areas traditionally have been very hard to clean because they are too small and confined for conventional vacuum cleaners to reach. 分析该选项
  • DWhen the homeowner is cleaning the larger area surfaces in the house, the hand-held electric vacuum pump will not need a filter replacement. 分析该选项
  • EHouses in which a maid staff does the vacuuming are typically exceptionally clean. 分析该选项
正确答案: C

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