目前电子商务应用范围广泛，电子商务的安全保障问题主要涉及_____等。

>> 成人高等教育 / 计算机应用基础

成人高等教育 / 计算机应用基础

正确率：100%

A、
加密
B、
防火墙是否有效
C、
数据被泄露或篡改、冒名发送、未经授权擅自访问网络
D、
身份认证

积分

计算机应用基础

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设是来自总体X的一个容量为4的样本, 则在下列E(X)的无偏估计量中, 最有效的估计量是( ). (A)(B)(C)(D)[参考答案：B] 分值：4(A)(B)(C)(D)概率论与数理统计

在现代社会中，（）制度已成为调整国家权力活动的基本途径。得分：分系统自动批改于2021年3月7日 0点12分政治学原理

(单选题) – How is life? – A、Same as ever.B、Thanks. And you?C、I hope all goes well with you.D、It is nice meeting you!大学英语2

46、The construction of the new bridge has been _ _ _ _ for two weeks because of the bad weather. A.devoted B.developed C.depended D.delayed统考英语词汇与语法

21、Very few people were coming to eat at the White Rose Restaurant and its owner did not know what to do. The food in its restaurant was cheap and good, but nobody seems to want to eat there. Then he did something that changed all that, and in a few weeks his restaurant was always full of men with their lady friends. Whenever a gentleman came in with a lady, a smiling waiter gave each of them a beautiful menu. The menu looked exactly the same on the outside, but there was an important difference inside. The menu that the waiter gave to the men gave the correct price for each dish and each bottle of wine, while the menu that he gave to the lady gave a much higher price. So when the man calmly ordered dish after dish and wine after wine, the lady thought he was much more generous than he really was.统考英语阅读理解

题型描述: 阅读理解Four decades ago, traditional women’s magazines such as Good Housekeeping and Family Circle talked to women as though they were children who needed to learn the basics of how to care for their families. Today, magazines do not do this. However, they still tend to define the female role in terms of homemaking and motherhood, and to offer beauty advice to help women attract men and please husbands. There are now a few less traditional magazines such as Ms. that show women in a range of roles and that cover a much wider range of topics. Television commercials have also, until recently, presented women primarily as sex objects and as housewives. Young sexy women were shown admiring older men who smoked a particular cigarette brand. Housewives were shown smiling joyfully about their clean bathrooms, or looking guilty for not using the right laundry soap to wash their husband’s clothes. These days advertisers are more careful about the way they present women, and they are presented in a variety of roles. However, it is still quite common to see advertisements where beautiful young women are dressed in sexy clothes to sell cars or other products. One study also found that the changes are mainly on nighttime television, with daytime commercials still tending to portray women doing household chores. Prime-time television programs also often used to stereotype women. In past decades, women were usually portrayed as lovers, as mothers, or as weak, passive girlfriends of powerful, effective men. Today’s TV programs are somewhat different. Women are more likely to be presented as successful and able to support themselves and their families, but the traditional stereotypes of women are still there. Even when women are depicted as career women, the storylines suggest that they should be sexy as well.1、 What makes Ms. different from other womenˊs magazines? A. Ms. offers women tips of caring for their families. B. Ms. is the type of women’s magazines that dominates now. C. Ms. treats women as adults who need to learn about being a mother. D. Ms. is interested in a wider range of women’s role. 2、 The best title for this passage is _ _ _ _ _ _ _ _ _ _ _ _ _ . A. Influence of Mass Media in Our Lives B. Gender Roles in the Media C. Womenˊs Magazines and Televisions D. Different Types of Media 3、 It can be inferred that _ _ _ _ _ _ _ _ might be a new type of women image on the television commercials. A. career women who enjoys her career success B. happy mothers doing the household chores C. guilty wives who don’t use the right soap D. young beautiful women dressed in sexy clothes 4、 From the context we know “to stereotype women” (Line 1, Paragraph 4) refers to _ _ _ _ _ _ _ _ _ _ . A. to portray women in some different ways B. to depict women as successful and able to support themse C. to tag on women some fixed roles and images D. to portray women as successful professionals 5、 Which of the following statement do you think the writer would least agree with in terms of the media’s attitude towards women? A. The mass media always presents to us a variety of women images as they are in daily life. B. The limited images of women mass media presented to the audience through mass media have influenced the way the audience think and behave. C. The mass media focuses womenˊs roles in life as a mother more than as a professional. D. The way mass media define women has changed as time goes by.统考英语A