一道物理学和知识.
发现照相机上的光圈和快门是可调的,现在“8”和“11”两档光圈数,那么当光线较亮时,一般选用光圈数__________；现有“60”和“125”两档快门,那么当光线较暗时,一般选用快门___________
his careless c______ him to lose the chance of a new job.