3 實效濕度低於多少時,日本即發布火災警報?
(A) 90%
(B) 80%
(C) 70%
(D) 60%
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統計: A(32), B(87), C(422), D(3133), E(0) #2933861
統計: A(32), B(87), C(422), D(3133), E(0) #2933861