Well, have you ever had _____ case where someone accused your journals of getting _____ wrong end of

the stick? [ ]

A. a; a

B. a; the

C. the; the

D. the; a

一条三级故障（CLASS3）何时必须被排除？（）

A.立刻排除

B.下次飞行之前

C.可以留下来而不受时间限制

D.十个日历天