T2值是指横向磁化矢量衰减到何种程度的时间()
A.37%
B.63%
C.36%
D.73%
E.99%
参考答案:A
The Internet is a wonderful discovery,________of great significance to people’s lives.
A.which I think is
B.which I think it is
C.as I think
D.as is I think
要解决下图反映的问题,下列最有效的措施是(注:基尼系数是判断收入分配公平程度的指标) ( )
A.增加居民非财产性收入,扩大居民文化消费
B.制定合理的分配政策,提高低收入者收入
C.取缔非法性收入,保护合法性收入
D.通过财政和税收手段,实现国民收入的初次分配