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题目选项分析

Most household appliances use electricity only when in use. Many microwave ovens, however, have built-in clocks and so use some electricity even when they are not in use. The clocks each consume about 45 kilowatt-hours per year. Therefore, households whose microwave oven has no built-in clock use 45 kilowatt-hours per year less, on average, than do comparable households whose microwave oven is otherwise similar but has a built-in clock.

Which of the following is an assumption on which the argument depends?

【选项】All households that have a microwave oven also have either a gas oven or a conventional electric oven.

选项是否正确?

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题目基本信息

  • 所属科目:逻辑CR
  • 题目来源1:PREP07 Test 2-14
  • 题目来源2:GWD-110
正确率:61%