题型:填空题 — Your mother isn't a doctor, is she? — _____. She teaches English in a middle school. [ ]A. Yes, she is B. Yes, she does C. No, she isn't D. No. she doesn't 查看答案
题型:填空题 在起步时,出现“咣当”一声响或响声较杂乱,在缓坡上向后倒车时,出现“嘎巴、嘎巴”的断续声,一般是()原因。A、一般是滚针折断、碎裂或丢失B、多半是轴承磨损松旷或缺油C、说明传动轴万向节叉等速排列破坏D、多为中间支承轴承内圈过盈配合松旷 查看答案