推荐或要求的时寿件的使用时间在页面右侧适当的位置（空间）
A.Recommending or requiring life limited components is on the right side of the page in an appropriate margin. B.Recommended or required retirement time of life limited parts is on the right side of the page in an appropriate space, C.The required retirement time of life limited components is located on the right side of an appropriate space.正确答案B
