单项选择题
A.地层好,跨度≤8mB.地层较差,跨度≤12mC.地层差,跨度≤12mD.地层差,跨度≤14m
场景中进行喷锚加固支护该隧道施工时,喷射混凝土封闭开挖面应采用早强混凝土,喷射厚度宜为()。A.50~100m...
单项选择题场景中进行喷锚加固支护该隧道施工时,喷射混凝土封闭开挖面应采用早强混凝土,喷射厚度宜为()。
A.50~100mmB.100~150mmC.150~200mmD.200~250mm
In a lottery a person may win a million dollars or more...
问答题In a lottery a person may win a million dollars or more. What would be the advantages of winning a million dollars’? Would there be disadvantages? You should write a composition of no fewer than 120 words on the subject on the Answer Sheet.
北京市中关村科技园区的首要区位优势是( )A.交通便利,通信发达B.强有力的政策支持C.高等院校和科研院所密集...
单项选择题北京市中关村科技园区的首要区位优势是( )