我国开路广播电视在同一地区覆盖范围内,为防止频道信号之间相互干扰,在U段频道与频道之 发布时间:2020-01-26 09:42 │ 来源:www.tikuol.com 题型:填空题 问题: 我国开路广播电视在同一地区覆盖范围内,为防止频道信号之间相互干扰,在U段频道与频道之间通常是采用间隔()播出。
题型:填空题 此题要求改正所给短文中的错误。对标有题号的每一行作出判断:如无错误,在该行右边横线上画一个勾(√);如有错误(每行只有一个错误),则按下列情况改正:此行多一个词:把多余的词用斜线划掉,在该行右边横线上写出该词,并也用斜线划掉。此行缺一个词:在缺词处加一个漏字符号(∧),在该行右边横线上写出该加的词。此行错一个词:在错的词下画一横线,在该行右边横线上写出改正后的词。注意:原行没有错的不要改。 Dear Ralph, I'm a senior student. I'm getting well with a boy in my class. But I have fallen in love with him for almost half a year. He is shy boy, so I wrote him a letter first to express my feeling. He wrote back. In his letter he said, "We are students. Our task is study hard. Let us to wait and see whether we have any chance after graduation." So after graduation I telephoned to him, asking him about going out. But he said he didn't want to. He just wanted to sleep and watched TV. What did you think I should do? Do you think I should continue to love him and give up? 1.________ 2.________ 3.________ 4.________ 5.________ 6.________ 7.________ 8.________ 9.________ 10.________ 查看答案
题型:填空题 为了保证教学实验顺利进行,学校选用教学经验丰富、认真负责的老师负责用改进的方法教“实验1班”和“实验2班”的数学,另外随机选择老师用传统方法教“普通1班”和“普通2班”的数学,实验班和普通班的学生随机分配。结果实验班各科成绩都显著高于对照,研究结论是改进的方法不仅能提高学生数学成绩,而且能全面改善学生的学习,值得推广。如果班级的称谓对研究的内部效度有影响,从性质和来源上看,该影响属于()。A.历史因素B.选择因素C.成熟因素D.测量和测试手段E.实验处理和程序 查看答案