酒的主要成分是()
A.乙醇和水
B.甲醇和水
C.乙醇和甲醇
D.乙醛和水
参考答案:A
So far the number of deaths caused by the earthquake in Chile has _________750.
A.appealed to
B.added to
C.amounted to
D.devoted to
因为质量不良所导致的预防成本或失败成本称为()
A.COPQ
B.CTQ
C.DPU
D.Sigmalevel