【名词&注释】
3糖苷键、4糖苷键(4 glucosidic linkages)
[单选题]下列属于直链淀粉的苷键有()
A. α-1,4糖苷键 B. α-1,6糖苷键 C. α-1,3糖苷键 D. α-1,2糖苷键