接地装置的焊接应采用搭接焊，扁钢与扁钢搭接长度为扁钢宽度的2倍，不少于（）施焊。
A、两面
B、三面
C、一面
D、四面
参考答案：B
As I grew up in a small village at the foot of a mountain, the visit to the village ______ scenes
of my childhood. [ ]
A. called up
B. called for
C. called on
D. called in
光镜下，干酪样坏死的病理改变是
A．属于凝同性坏死，原有的组织轮廓消失
B．属于液化性坏死，细胞周围网架结构被破坏
C．属于液化性坏死，但仍保持细胞周围网架结构
D．属于凝固性坏死，但保存原有的组织轮廓
