A.Ⅰ關(guān)出油,Ⅱ關(guān)進(jìn)水,Ⅲ關(guān)出水,Ⅳ關(guān)進(jìn)油 B.Ⅰ關(guān)出水,Ⅱ關(guān)進(jìn)油,Ⅲ關(guān)出油,Ⅳ關(guān)進(jìn)水 C.Ⅰ關(guān)進(jìn)水,Ⅱ關(guān)出油,Ⅲ關(guān)出水,Ⅳ關(guān)進(jìn)油
A.水 B.空氣 C.氫氣
A.1 B.2 C.1.5