30.如圖由(a)至(b),是屬於下列那一種動作?
(A)雙側對稱性(bilateral symmetric)
(B)雙側非對稱性(bilateral asymmetric)
(C)對稱交替性(symmetric reciprocal)
(D)非對稱交替性(asymmetric reciprocal)
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統計: A(98), B(809), C(311), D(503), E(0) #1156274
統計: A(98), B(809), C(311), D(503), E(0) #1156274