A．40mm B．60mm C．80mm D．100mm
A．60mm B．100mm C．120mm D．200mm
A．100～300mm B．200～400mm C．300～500mm D．400～600mm
A．100 mm B．150 mm C．200 mm D．250 mm
A．200mm B．150mm C．120mm D．100mm
A．100mm B．150mm C．200mm D．250mm
A．组合安装 B．高空拼装 C．局部安装 D．整体安装 E．分段安装
A．50mm B．60mm C．70mm D．80mm
A．150mm B．120mm C．100mm D．80mm
