問題詳情
47 The smoke emitted from oil _____ contains gases and particulates that may have toxic effects onour bodies, much like exhaust emissions from motor vehicles or smoke from wood stoves.
(A) conformation
(B) combustion
(C) confederation
(D) conservation
參考答案
答案：B
難度：計算中-1
書單：沒有書單，新增