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【简答题】
根据网关的作用不同，可以将网关分为：()，应用网关，和安全网关。 A.传输网关 B.寻址网关 C.协议网关 D.IP网关
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举一反三
【单选题】听力原文：M: How is school going, Barbara? Are you taking any new classes? W: I'm taking another really interesting course called Business and the Web. We are learning about e-commerce and how new technolo...
A.
E-commerce.
B.
Wireless communications.
C.
Business and the web.
D.
New technology.
【单选题】What can be inferred from the first paragraph?
A.
Taking a nap is useless for busy people.
B.
Taking a nap is viewed as something for curing disease.
C.
Taking a nap is regarded as lazy to work.
D.
Taking a nap can promote your work efficiency.
【单选题】听力原文：M: How is school going, Barbara? Are you taking any new classes? W: I'm taking another really interesting course called Business and the Web. We are learning about e-commerce and how new technolo...
A.
E-commerce.
B.
Wireless communications.
C.
Business and the web.
D.
New technology.
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