Let’s discuss the question under five heads. Which is the most appropriate translation for "head" in this sentence?()
A.正面
B.首脑
C.题目
D.头
A.正面
B.首脑
C.题目
D.头
第2题
截取一段明文如下:
The Mutual Information Analysis (MIA) is a generic side channel distingui she that has been introduced at CHES 2008. This paper brings three contributions with respect to its applicability to practice. First, we emphasize that the MIA principle can be seen as a toolbox in which different (more or less effective) statistical methods can be plugged in. Doing this, we introduce interesting altematives to the original proposal. Second, we discuss the contexts in which the MIA can lead to successful key recoveries with lower data complexity than classical attacks such as, eg. using Pearson's correlation coefficient. We show that such contexts exist in practically meaningful situations and analyze them statistically. Finally, we study the connections and differences between the MIA and a framework for the analysis of side- channel key recovery published at Eurocrypt 2009. We show that the MIA can be used to compare two leaking devices only if the discrete models used by an adversary to mount an attack perfectly correspond to the physical leakages.
忽略文中的数字和符号,试用(1.9)仿射密码加密。然后对密文进行破密。
第3题
(1)至少一个周六晚上不能在家过夜的旅客才可以购买特价机票。
(2)坚持将水泥送货上门,并以购买者的住址为定价基础。
(3)销售食品加工机时附送10美元折扣的优惠券。
(4)对卫生纸提供临时促销价。
(5)给高收入病人做整形外科手术的要价高于低收入病人。
Price discrimination requires the ability to sort customers and the ability to prevent arbitrage. Explain how the following can function as price discrimination schemes and discuss both sorting and arbitrage:
a. Requiring airline travelers to spend at least one Saturday might away from home to qualify for a low fare.
b. Insisting on delivering cement to buyers, and basing prices on buyers' locations.
c. Selling food processors along with coupons that can be sent to the manufacturer to obtain a S 10 rebate.
d. Offering temporary price cuts on bathroom tissue.
e. Charging high-income patients more than low-income patients for plastic surgery.
第6题
practice hurriedly.A. other than B. more than C. rather than D. better than
第8题
第9题
A.必然性通过偶然性开辟道路
B.肯定中包含着否定的因素
C.量变必然引起质变
D.有其因必有其果
第10题
【题目描述】
21. The first question we now discuss is _______ early tomorrow.
A) whether
B) where
C) what
D) whom
【我提交的答案】: D |
【参考答案与解析】: 正确答案:A |
【我的疑问】(如下,请求专家帮助解答)
early是什么意思,有什么用法?
第11题