一个垂直放置的环形天线，其水平面与垂直面的方向性图分别是：（）_通信导航理论_全学科试题题库

当前学科：通信导航理论

题目：单选
一个垂直放置的环形天线，其水平面与垂直面的方向性图分别是：（）
答案： <查看本题扣1积分>

查看答案

答案不对？请尝试站内搜索

推荐知识点:

离心式压缩机的级是以一个叶轮来划分的。

保护风景名胜区的主要措施？

钢构件组装工程吊车梁和吊车桁架不应下挠。

双踪示波器的电子开关有（）和（）两种转换方式。

聚乙烯管材端口应切割平整，与管材轴线（）。

行政管理的作用

下列哪一项不是肉毒素用于前额注射治疗多汗症时常见并发症（）。

母材指被焊的工件。

Marriage Advertisements in India Every Sunday morning millions of Indians settle down with a cup of tea and special weekend issues of their newspapers, just as Americans do. But here, with the marriage season approaching, many of them quickly to a Sunday feature that is particularly Indian-the-columns of marriage advertisements in which young people look for husbands and wives. This is relatively modern change in the age-old custom of the arranged marriage. The thousands of advertisements published each week increasingly reflect social changes that coming to this traditional society. For example, although women are still described in terms of appearance, or skill in "the wifely arts", information about her earning power is entering more and more of the advertisements. This reflects the arrival in India of the working wife. Divorce, which used to be almost unheard of in India, is sometimes now mentioned in the advertisements as in the case of a woman whose advertisement in New Delhi newspaper explained that had been "the innocent party" when her marriage broke up. Because the custom of the dowry (marriage payment) is now illegal, some advertisements say "no dowry" or "simple marriage", which means the same thing. However, the fathers of many bridegrooms still require it. In a land where light skin is often regarded as socially preferable, many also require that a woman have a "wheat-color" complexion or that a man be "tall, fair and handsome". Advertisements are placed and eagerly read by a wide range of people in the upper classes, mostly in cities. Many of them receive dozens of answers."There's nothing embarrassing about it," explained a Calcutta businessman advertising a son-in-law. "It's just another way of broadening the contacts and increasing the possibility of doing the contacts and increasing the possibilities of doing the best one for one's daughter." Because of high unemployment and a generally poor standard of living here, one of the best attractions a marriage advertisement can offer is a permit to live abroad, especially in Canada or the United States. A person who has one can get what he wants. One recent Sunday in Madras, for example, a Punjabi engineer living in San Francisco advertised for a "beautiful slim bride with lovely features knowing music and dance". And a man whose advertisement said that he held an American immigration permit was able to say, only girls from rich, well-connected families need apply. India′s society is changing.（）

违反治安管理行为与犯罪行为的区别为（）。