31. 下列英文名詞何者為長時間作業艙間?
(A)Long Cover
(B)Long Hatch
(C)Long Room
(D)Long Space
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統計: A(0), B(4), C(0), D(0), E(0) #3013925
統計: A(0), B(4), C(0), D(0), E(0) #3013925