按材料种类、工艺特点、施工工法等划分的为（）。
A、分部工程
B、子分部工程
C、分项工程
D、检验批
参考答案：B
I had just taken a bite of my hot dog ________ I heard a familiar voice yelling at me from across the crowded school yard.
A．before
B．while
C．since
D．when
PCT测试工艺流程是什么？
