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A
$\text {C}_{12}\text {H}_{22}\text {O}_{11}\xlongequal[\ \ \ \ \ \ ]{△}12\text {C}_{}+11\text {H}_{2}\text {O}_{}$
二氧化碳和水
$\ \text {C}_{12}\ \text {H}_{22}\ \text {O}_{11}+12\ \text {O}_2\xlongequal[\ \ \ \ \ \ ]{点燃}11\ \text {H}_2\ \text {O}+12\ \text {CO}_2$
不是
C
钙
铁
b
供给呼吸
$\ \text {C}_6\ \text {H}_{12}\ \text {O}_6+6\ \text {O}_2\xlongequal[\ \ \ \ \ \ ]{酶}6\ \text {H}_2\ \text {O}+6\ \text {CO}_2$
$(\mathrm{C}_{6} \mathrm{H}_{10} \mathrm{O}_{5})_{n}+n \mathrm{H}_{2} \mathrm{O} \xlongequal[\ \ \ \ \ \ ]{催化剂} n \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6} \quad$
$\ \text {C}_6\ \text {H}_{12}\ \text {O}_6\xlongequal[\ \ \ \ \ \ ]{酒化酶}2\ \text {C}_2\ \text {H}_6\ \text {O}+2\ \text {CO}_2↑$
$\ \text {C}_2\ \text {H}_5\ \text {OH}+3\ \text {O}_2\xlongequal[\ \ \ \ \ \ ]{点燃}2\ \text {CO}_2+3\ \text {H}_2\ \text {O}$
污染小、成本低(其他答案合理均可)
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