第21题: [单项选择]I'd rather have a room of my own, however small it is, than______ a room with someone else. A. share B. to share C. sharing D. to have shared 参考答案:A 答案解析:根据 I'd rather have 应选择 share 构成平行结构。因此A项为正确答案。
第22题: [单项选择]最常用来调整轴承间隙的方法是() A. 调整垫片 B. 螺纹环 C. 调整螺钉 D. 以上都不正确 参考答案:A