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  3. Because short messaging service is a kind of data communication, second generati

Because short messaging service is a kind of data communication, second generati

游客2023-08-30  75
问题 Because short messaging service is a kind of data communication, second generation wireless cannot support it. [br] One of the great drawbacks of cellular networks is its expensive implementing cost.
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答案 NG。
解析 由题干中的cellular networks定位到第一个小标题下第二段，再由drawbacks定位到到该段第四、五句 Some of the disadvantages include...to support those higher data rates。题干中drawbacks与原文中disadvantages同义；题干指出expensive implementing cost是cellular net- works的缺点，但是在本段文字中所提到的缺点如singular point of failure, no lead balancing, spectral inefficiencies等等，并没有提及蜂窝网在铺设过程中的费用问题。所以判定该题为NG。
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