阿摩線上測驗
15.Many customers complained that they had difficulty assembling the M-20 mountain bicycle, because the instructions in the manual were not __________ .
(A) implicit
(B) explicit
(C) complex
(D) exquisite
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統計： A(14), B(10), C(4), D(5), E(0) #667010
統計： A(14), B(10), C(4), D(5), E(0) #667010
