电源线与铜鼻子连接应采用（）或（）方式。
A.套接
B.压接
C.焊接
D.铆接
参考答案：B, C
It is you rather than Lucy who ____ for the accident.
A．is to blame
B．is to be blamed
C．are to blame
D．are to be blamed
扁平颗粒胶片的感光材料为（）.
A.AgCl
B.AgBr
C.AgI
D.AgF
E.AgBr+AgI
