Label the diagram below. Choose NO MORE THAN THREE WORDS from the passage for each answer. Write your answers in boxes on your a

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问题 Label the diagram below.
Choose NO MORE THAN THREE WORDS from the passage for each answer.
Write your answers in boxes on your answer sheet.


选项

答案double flame

解析 一种什么的燃烧器系统。空白处应该填写单数名词成分。通过题干关键词burner system可定位到第8段第1句,只有这段提到了燃烧系统:Both the 1996 and 2000 torches adopted a double flame burning system.即1 996和2000的火炬都采用了双火焰的燃烧系统。因此,本题的答案为double flame。
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