40.下列何種艙蓋節省空間,在關閉時可以供堆高機通行?
(A)翻立式(Rolling and tipping type)
(B)滑動式(Rolling type)
(C)滑收式(Sliding type)
(D)捲簾式(Roll stowing type)

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統計: A(8), B(3), C(12), D(7), E(0) #2401156