19.屋內台電配電室樑下淨高至少:
(A)3.0 m
(B)2.5 m
(C)2.0 m
(D)1.5 m
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統計: A(1), B(0), C(1), D(0), E(0) #3903704
統計: A(1), B(0), C(1), D(0), E(0) #3903704