组成蛋白质的氨基酸的r基 A.与一个氢原子和一个 C2h4o2n相连 B.约有20种 C.至�有一个氨基和一个羧基 D.至�有一个氨基或一个 Template




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tomski组成蛋白质的氨基酸的r基 a.与一个氢原子和一个 c2h4o2n相连 coloring