在金苗助手中，做批量迁入迁出时，导入导出的文件后缀名一定是（）A、int B、docC

— Have you seen Tony recently?

— No, but I _____ dinner with him on Sunday. [ ]

A. would have

B. have had

C. have been having

D. am having

按照我国《城市规划基本术语标准》对城市基础设施的定义，狭义的城市基础设施主要包括工程性基础设施与社会性基础设施两大类。( )

聚氯乙烯电缆的产品型号有（）等

A.VV、YJV

B.VLV、YJLV

C.VV、VLV

D.VLV、YJLW

围鞘

土壤颗粒越细、小孔隙越多，则土壤排水能力越弱。