【判断题】方波和等腰三角波相比,含有的高次谐波更加丰富。()
【简答题】若X(t)为一马尔可夫过程,t 1 <t 2 <…<t m <t m+1 <t m+2 ,试证: f(x m+1 ,x m+2 ,t m+1 ,t m+2 |x 1 ,x 2 ,…,x m ,t 1 ,t 2 ,…,t m )=f(x m+1 ,x m+2 ,t m+1 ,t m+2 |x m ,t m )
【判断题】调查的追踪与反馈是为了继续了解调查结论是否被重视和采纳、采纳的程度和采纳后的实际效果及调查结论市场发展是否致等目的而进步开展的工作。( )
【判断题】实施追踪与反馈是为了继续了解报告的结论是否被重视和采纳,采纳的程度和采纳后的实际效果及调查结论与市场发展是否一致等。( )
【简答题】阅读表达。 Little Tony likes cartoons very much.When the cartoons begin on TV,he does nothing until they are over.Sometimes he'd rather wait for a long time and go to bed late.In the morning ,his mother h...
【简答题】选择合适的词填空 п ить — приимать — есть 1. Через каждые два часа он лекарство от головной боли . 2. Он любит пиво . 3. Мы за здоровье . 4. Кто не работает , тот не . 5. Русские суп ложкой . б олеть (生病) — бо...
【简答题】Little Tom likes cartoons (动画片) very much .When the cartoons begin on TV, he does nothing until they’re over. Sometimes he’d rather wait for a long time and go to bed late. In the morning his mother h...