The physicists propose that our attention ________ the use of special methods of thinking
A. would be directed towards
B. should be directed towards
C. is directed towards
D. directs towards
查看答案
质量信息传递大体由_________组成。
A. 信源一信道一信源
B. 信源一信道一反馈
C. 信源一信道一新信源
D. 信源一信道一信宿
资本的技术构成是指由生产技术水平决定的生产资料和劳动力的比例。 ()
A. 正确
B. 错误