It was not until last week________she found________she thought was quite mistaken. [ ]

A. when; that  

B. that; that

C. when; what  

D. that; what

应根据轴承的（）等不同，选用不同粘度的轴承油。

A.工作温度

B.速度指数

C.负荷大小

D.等级

E.体积大小