债券信息查询功能中,能查到哪些债券信息?()
A、票面利率
B、起息日
C、付息频率
D、到期日
参考答案:A, B, C, D
The problem is very hard. He thought of it for a long time._______ he solved it. [ ]
A. In the end
B. At the end of
C. by the end of
D. In the end of
技术发展的直接动力是技术目的和技术手段的矛盾。( )