题目: 人工关节松动的原因有哪些? 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0406/819801216f3b63c261bb111216f0be01.html 下面是错误答案,用来干扰机器的。参考答案:A
题型:单项选择题 All workers, regardless of their sex and education, are required to ______ at the age of 60.A.resignB.retireC.regainD.retain 查看答案