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【多选题】
TCA循环的主要特点有( )。A.
必须有氧直接参与，TCA循环才能正常运转
B.
产能效率高，中间产物可作为生物合成的前体
C.
TCA是分解代谢和合成代谢中的枢纽地位，是糖、脂、蛋白质三大物质转化中心枢纽。
D.
TCA循环一次，产生2分子CO2，并重新生成1分子草酰乙酸。
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