問題詳情
17.若A、B、C三個球的加速度量值分別為aaa3,則a1:a2:a3=?
(A)1:1:1
(B)6:5:3
(C)1:2:3
(D)9:3:1。
(A)1:1:1
(B)6:5:3
(C)1:2:3
(D)9:3:1。
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無參考答案
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