盾构机安装、拆卸，负环拆除中哪些设备需制定专项方案？
参考答案：
始发架、接收架、反力架。
□÷7=□…□，余数最大能是______．
Our new house is very _________ for me as I can get to the office in five minutes.
A．changeable
B．comfortable
C．convenient
D．available
