货币政策时滞以中央银行为界限可划分为()。
A.内部时滞
B.外部时滞
C.认识时滞
D.行动时滞
参考答案:A, B
—It's exciting that Shengzhou Ⅶ was set up into space successfully.
—Yes,but it_________ impossible in China in the past.[ ]
A. found
B. felt
C. looked
D. seemed
新颖性,是指该发明或者实用新型不属于现有()。
A.理论
B.技术
C.产品