. – Do you think Linda will be fired this week?

– The question is not worth discussing. I think the manager has _____.

A． made an impression on her

B．made contact with her

C．made up his mind about it

D．made his fortune from it

一台仪器的工作频率是2.5MH拪Z拡，在探测工件时纵波和横波的波长各为（）。

（钢CL＝5900m/s钢CS＝3200m/s）

A、纵波3mm，横波2mm

B、纵波2mm，横波3mm

C、纵波2.36mm，横波1.28mm

D、纵波1.28mm，横波2.36mm