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【单选题】
构成蛋白质分子的氨基酸属于下列哪种氨基酸属于下列哪种氨基酸A.
L- ą 氨基酸
B.
D- ą 氨基酸
C.
L- β-氨基酸
D.
D- β-氨基酸
E.
L、D- ą-氨基酸
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A.
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A.
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B.
rarely
C.
normally
D.
continually
相关题目：
【单选题】对通货膨胀的衡量可以通过对一般物价水平上涨幅度的衡量来进行。一般说来,不是常用的指标是( )。
A.
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B.
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D.
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