For the following statements， which one is the strongest symmetrical encryption algorithm？（）

A . Fire Upstairs in the Neighbor‘s House B . A Mysterious Fire That Causes No Death C . Teen Braves Blaze to Help Neighbors in Need D . Importance of Neighbor‘s Help in Times of Difficulty

A . Either the -a or flag -b may be used, but not both. B . If the flag -a is used then the flag -b also must be used. C . One of the -a or -b flags must be used, but not both at the same time. D . Both the flags may be used together, but neither are mandatory.

A . How Chocolate Was Made for the War B . How Chocolate Helped Win the War. C . What Were the Requirements about Chocolate for the War D . What Were the Difference between D Ration Bars and K Ration Packs

A．The Threatened Extinction of Marine Life. B．The Cultivation of Oysters. C．The Discoveries Made by Marine Biologists D．The Varieties of Wild Oysters. 此题为多项选择题。

A) Human behavior. B) Creatures of Society. C) The Science of Custom. D) The Functions of Cultures.

A．Numeracy might explain B．Save early, save wisely C．How to handle the crisis？ D．The erratic pattern of payment

A．When Was the Umbrella Invented B．The Roles of Umbrellas in History C．The Colors and Shapes of Umbrellas D．Who Needed the Umbrella First

A．Different Forms of Exercise. B．Exercise--The Road to Health. C．Scientific Evidence of Health Benefits. D．Running--A Popular Form. of Sport.

A．Problems Facing East African Tourists. B．African Wild Animals Becoming More Dangerous. C．The Increasing Popularity of Game Reserves. D．Some Problems of East African Game Reserves.

A．Global Satellite Communications. B．New Voice and Messaging Systems. C．New Generation Satellite. D．Always in Touch.

Threshold value-10000 Percentage-50 You enter an invoice with a value of 15000 What is the probability that the invoice will be blocked stochastically？ Please choose the correct answer.() A.100% B.5% C.50% D.75%

A．Human Identity—an Elusive Illusion B．How to Identify a Particular Person C．What Makes Human Beings Individuals？ D．The History of Human Identity

A．orʹgan B．diʹgest C．ʹdisease D．ʹrenew