U1981业务槽位可插入以下哪种单板()。
A.MSU
B.CIU
C.ASI
D.SMU
参考答案:C
17. Can you lend me the book ________ the other day?
A.which you talked
B.that you talked
C.about that your talked
D.you talked about
下列配合零件不应选用基轴制的是()。
A、滚动轴承内圈与轴
B、滚动轴承外圈与外壳孔
C、轴为冷拉圆钢,不需再加工
D、圆柱销与销孔