在E1载波中,每个子信道的数据速率是(),E1载波的控制开销占()。
E1载波的控制开销占()。
A.3.125%
B.6.25%
C.1.25%
D.25%
参考答案:B
句型转换。
1. So I eat nothing that's been cooked in oil.(改为同义句)
So I _____ eat _____ that's been cooked in oil.
2. You stay away from sugar, _____?(反意疑问句)
3. People who eat a balanced diet should be healthier than those
who only eat biscuits and hamburgers, _____?(反意疑问句)
下列哪些是效应评价的内容()
A.人群健康需求评估
B.传播材料的预实验
C.行为影响因素的变化评估
D.传播媒体的评估
E.人群的参与度