根据现行有关部门制度规定，上海证券交易所上市的B股现金红利发放日为( )。A．T+

电介质在电场作用下，主要有（）等物理现象。

A、极化

B、电导

C、介质损耗

D、击穿

Mr Brown had lain ____ the ground ____ four hours before they finally found him. [ ]

A. on; for

B. at; in

C. on; after

D. in; during

 — Do you know       ?

— Sorry, I don’t have a watch.

A． whose watch this is

B． whose watch is this

C． what time it is

D． what time is it

重点用于加强国家重点开发区域特别是中西部国家重点开发区域的交通、能源、水利、环保以及公共服务设施的建设是( )。

A．基础设施投资
B．生态环境保护投资
C．农业投资
D．民间投资