与口角炎发病无关的因素有()
A.B族维生素缺乏,致营养不良
B.感染因素
C.遗传因素
D.创伤因素
E.变态反应
参考答案:C
_____ the recent bad weather, the project is several weeks behind schedule.
A.Apart from
B.Owing to
C.Instead of
D.But for
因为汽油压缩比柴油压缩比高,所以才设点火系。