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【简答题】

One Information Highway Is Above and Beyond All the Rest


The most powerful carrier of information ever created isn’t a highway at all. It’s a super skyway. And it exists today--a satellite network that is ubiquitous (普遍存在的), reliable and worldwide.
Unlike fiber optics (纤维光学), satellites can send data to any point on earth, at sea or in the air--all at the same time. Nor are they vulnerable (易损的) to great natural disasters like hurricanes and earthquakes.
Satellites are cost-effective whether they’re beaming information across towns or across oceans. And they are essential for today’s broadcast, cable, business, TV, radio, data transmission, educational programming and telephony industries.
The information highway is changing rapidly, but satellites will continue to provide the necessary fast lane. For a free brochure (小册子) on how satellites can help your business, call us at 5422538.

What’s the purpose of this advertisement
To sell().


The most powerful carrier of information ever created isn’t a highway at all. It’s a super skyway. And it exists today--a satellite network that is ubiquitous (普遍存在的), reliable and worldwide.
Unlike fiber optics (纤维光学), satellites can send data to any point on earth, at sea or in the air--all at the same time. Nor are they vulnerable (易损的) to great natural disasters like hurricanes and earthquakes.
Satellites are cost-effective whether they’re beaming information across towns or across oceans. And they are essential for today’s broadcast, cable, business, TV, radio, data transmission, educational programming and telephony industries.
The information highway is changing rapidly, but satellites will continue to provide the necessary fast lane. For a free brochure (小册子) on how satellites can help your business, call us at 5422538.

What’s the purpose of this advertisement
To sell().

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题目标签:存在光学纤维
参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三

【单选题】纤维属于 ( )。

A.
薄壁细胞
B.
厚角细胞 
C.
石细胞
D.
厚壁细胞

【单选题】莱卡是指()纤维。

A.
聚酯纤维
B.
聚丙烯腈纤维
C.
聚氨酯纤维
D.
聚乙烯醇纤维

【单选题】负外部效应的存在可引起 【 】

A.
产量不足
B.
产量过多
C.
产量均衡
D.
产量波动

【多选题】基于Internet的EDI存在的问题有()。

A.
安全问题
B.
网络营运的可靠性
C.
成本问题
D.
第三方认证问题

【简答题】光学的研究内容十分广泛,概括起来包括( )。

A.
光的发射、传播和接收等规律
B.
光和其他物质的相互作用
C.
光的本性问题
D.
光在社会生产和生活中的应用

【多选题】光学制导技术的优点是()。

A.
制导精度高
B.
抗干扰能力强
C.
灵敏度高