国旗设计者

A、梁思成

B、曾联松

C、林徽因

A、徐悲鸿

B、曾联松

C、梁思成

D、

无事不登三宝殿三宝指哪三宝

“无事不登三宝殿”你知道“三宝”是指哪三宝?

A．创新标杆

B．剪裁

C．发明问题解决标准算法ARIZ

D．技术系统进化法则

用真值表证明下列蕴涵式为重言式，

A．because buyers of bonds may prefer bonds of one maturity over another, interest rates on bonds of different maturities do not move together over time

B．the interest rate on long-term bonds will equal an average of short-term interest rates that people expect to occur over the life of the long-term bonds plus a term premium．

C．because of the positive term premium, the yield curve will not be observed to be downward sloping．

D．the interest rate for each maturity bond is determined by supply and demand for that maturity bon

D．