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國二上理化2-3空氣的成分與特性課文重點複習
請輸入你的E-MAIL方可作答, 作答方式: 針對( )填入正確答案, 共10格,滿分100分(可重複作答)
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助燃但不可燃的氣體, 可供生物呼吸的氣體是( )氣.
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蘋果果肉變色是蘋果與空氣中的( )氣作用的結果.
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空氣中含量最多的氣體是( )氣.
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常用於填充霓虹燈,通電後可發出紅光是( )氣.
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僅次於氫氣,第二輕的氣體,因較穩定安全, 常用來替代氫氣,填充氣球是 ( )氣.
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空氣中含量第三多的氣體是( )氣.
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常填充於食品包裝, 避免食物氧化變質的氣體是( )氣.
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可作為燈泡內填充的氣體,或高溫焊接金屬時,用它來防止金屬氧化是( )氣.
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綠色植物行光合作用必須利用到的氣體是( ).
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空氣中含量第二多的氣體是( )氣.
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