A.200~280g B.100~150g C.500~700g D.50~70g E.150~300gBegg细丝弓矫治技术中,每侧要维持Ⅱ类牵引力是

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问题 A.200~280g
B.100~150g
C.500~700g
D.50~70g
E.150~300g

选项 Begg细丝弓矫治技术中,每侧要维持Ⅱ类牵引力是

答案D

解析
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