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【简答题】
以下四人正在寻找一些网站, 阅读以下五段不同网站的介绍(A、B、C、D、和E),对出正确答案,并在答题纸上将该选项标号涂黑。A、B、C、D、和E选项中有一多余选项。 1. Jasper enjoys listening to music. He is expecting to find a website where he could search for various songs with similar tunes that he prefers. 2. Luke is planning to buy a car. But right now he has not made up his mind. He prefers Mazda RX-8. He wants to find more information about this car to make sure that it is a good choice. 3. This Sunday is Valentine’s Day. Roderick is still deciding what kind of presents he should buy for his girlfriend. He prefers to have something traditional, like chocolate. 4. Fiona is retired. She begins to pay attention t o her health. What interests her most now is how to remain healthy and young. She always surfs on the internet for such information. A. Naturespath.com is an excellent health-food website. “Life enhancement expert” Allan Hunkin interviews such guests as nutrition expert Dr. David Katz and tri-athlete Melanie McQuaid. They talk up health food and weight management, including debates on the benefits of whole grain and organics. B. Autoblog.com tops the category by covering “auto industry news from A to Z.” They discuss hundreds of car models and links to outside articles for more information. While the site provides no reliability reviews, its “royal and growing fan base” comments frequently on the entires. C. Mrchocolate.com—The Consumer Reports “best buy” for “unusual” chocolates for the one you love. Jason’s choice is 50 pieces of small dark, milk, and white chocolate with offbeat (标新立异的) centers, including coffee, nut butter, and tropical fruit. D. Carpet-rug.org— The Carpet and Rug Institute awards a “Green Label” to vacuums (真空吸尘器) that release fewer than 100 micrograms of dust particles per cubic meter of air. Find a list at this site. E. Pandora.com takes one of your favorite tunes, then suggests songs that you might enjoy. Pandora offers 10 hours of free use, then charges $ 36 a year.
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【简答题】有平行反应在平推流反应器中进行 A→P 目的产物 r P = k 1 c A A→S 副产物 r S = k 2 c A 2 其中 k 1 =1h -1 , k 2 =1.5m 3. kmol -1. h -1 , c A0 =5kmol.m -3 , c p0 =c s0 =0 ,体积流率为 5m 3. h -1 ,求转化率为 90% 时出口目的产物的浓度 c p 。
【单选题】Dolphins do not have a communication system of their own.
A.
Y
B.
N
C.
NG
【简答题】communication system
【单选题】通常汉字信息处理的过程不包括()
A.
汉字信息的输入
B.
汉字信息的处理
C.
汉字信息的转化
D.
汉字信息的输出
【单选题】The aviation communication system consists of airborne communication system on the plane and communication system on the ground, which can be used for , , and plane-to-plane communication.
A.
captain to F/O, F/O to Captain
B.
Pilots to ATC, ATC to Pilots
C.
air-to-ground, air-to-air
D.
Flight to Airline, Airline to Flight
【单选题】In a data communication system, the transport media with the widest frequency band and best reliability is the( ).
A.
radio channel
B.
coaxial cable
C.
twisted--pair cable
D.
fiber optic cable
【简答题】有一分解反应在平推流反应器中进行, A → P , r 1 = k 1 c A ; A → R , r 2 = k 2 c A 2 。 k 1 = 1 h -1 , k 2 = 1.5 m 3 .kmol -1 .h -1 ,进料中只有 A , c A0 = 5 kmol.m -3 ,转化率为 90% 时,产物 P 的浓度 为 kmol.m -3 。
【单选题】communication system
A.
通讯系统
B.
交互系统
C.
运行系统
【简答题】The aviation communication system consists of airborne communication system on the plane and communication system on the ground, which can be used for , , and plane-to-plane communication.
【单选题】Beijing is a pleasant place with convenient transportation and communication system.
A.
shocking
B.
pleasing
C.
boring
D.
surprising
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