HbBarts的组成是()
A.α2β2
B.α2γ2
C.α2δ2
D.γ4
E.δ4
参考答案:D
解析:HbBarts的组成是γ4
—Can you give me a hand?
―_____ [ ]
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改变物体内能的方法有做功和______两种.