He needs more drinks, but he doesn't have money. [ ]
A. a
B. many
C. some
D. any
答案:D
内部信用增级包括()。
A.超额抵押
B.资产支持证券分层机构
C.信用证
D.担保
为什么要进行电网的互联,我国目前的电网格局如何?