Recently implemented "shift-work equations" based on studies of the human sleep cycle have reduced sickness, sleeping on the job, fatigue among shift workers, and have raised production efficiency in various industries.
显示答案
正确答案: C
- KMF解析
- 网友解析
题目基本信息
- 所属科目:语法SC
- 题目来源1:OG12-134
- 题目来源2:OG15-134
- 正确率: 43%
- 难度: 难