2. 职称英语
  3. Label the diagram below.Choose NO MORE THAN THREE WORDS from the passage for ea

Label the diagram below.Choose NO MORE THAN THREE WORDS from the passage for ea

游客2025-02-14  19
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.
[br]
选项
答案 propane and butane
解析 关于什么的混合体用作液体燃料。通过liquid fuel mix of可知，空白处应该填写气体名称。文章第7段提到了几个气体名称，先是提到1996年的丙烯，再到2000年丙烷和丁烷的混合，即For the fuel，they decided to go with a combination of 35 per cent propane fa gas that is used for cooking and heating)and 65 per cent butane(a gas that is obtained from petroleum)，thus creating a powerful flame without generating much smoke．其中combination对应题干mix。因此，本题的答案为propane and butane。
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