A.含蠟量高,凝固點(diǎn)高B.含蠟量高,凝固點(diǎn)低C.含蠟量低,凝固點(diǎn)高D.無(wú)直接關(guān)系
A.關(guān)來(lái)水閥,開(kāi)油管放空閥B.關(guān)注水總閥,開(kāi)油管放空閥C.關(guān)來(lái)水閥,開(kāi)油套連通閥D.關(guān)注水總閥,開(kāi)油套連通閥
A.關(guān)注水總閥,開(kāi)油管放空閥,開(kāi)油套連通閥B.開(kāi)油套連通閥,關(guān)注水總閥,開(kāi)油管放空閥C.開(kāi)油管放空閥,開(kāi)油套連通閥,關(guān)來(lái)水閥D.關(guān)來(lái)水閥,開(kāi)油管放空閥,開(kāi)油套連通閥