问题 问答题 简答题

造成基站上下行不平衡的可能原因有哪些。

答案

参考答案:

主要的因素有:

(1)天馈线安装问题;

(2)塔放安装;

(3)参数设置不当;

(4)基站硬件故障;

(5)直放站;

(6)天线匹配方面;

(7)手机用户行为。

问答题

       20世纪30年代,在资本主义经济危机的打击下,日、德、意等国建立起法西斯专政,美国则保住了资本主义民主制度。请问美国采取了什么重大措施,度过了经济危机,并保住了资本主义民主制度。美国这种不同的选择,对世界历史产生了怎样的影响?

                                                                                                                                                             

                                                                                                                                                             

                                                                                                                                                             

                                                                                                                                                             

                                                                                                                                                             

单项选择题 B1型题