检修现场“三净”指的是（）、检修场地净、开工场地净。
参考答案：停工场地净
---__________ I have a ticket , please?
---Sorry,sir. All the tickets were sold out ten minutes ago.
A．May
B．Need
C．Must
D．Should
地方陪同的自身状况准备有哪些方面
