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单选题
关于5G优先的工作原理，下面说法正确的是（）。
A
5G优先特性是指让5G的客户端优先发送数据
B
5G优先开启以后，只支持2.4G的客户端的网络转输速度会变慢
C
5G优先要求AP是双频AP时才可以正常工作
D
5G优先要求所有的客户端都要同时支持2.4GHz和5GHz频段
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更多 “单选题关于5G优先的工作原理，下面说法正确的是（）。A 5G优先特性是指让5G的客户端优先发送数据B 5G优先开启以后，只支持2.4G的客户端的网络转输速度会变慢C 5G优先要求AP是双频AP时才可以正常工作D 5G优先要求所有的客户端都要同时支持2.4GHz和5GHz频段” 相关考题
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单选题Today ,as in every other day of the year ,more than 3000 U.S. adlescents will smoke their first cigarette on their way to becoming regular smokers as adults. During their lifetime,it can be expected that of these 3000 about 23 will be murdered,30 will die in traffic accidents, and nearly 750 will be killed by a smoking-related disease. The number of deaths attributed to cigarette smoking outweithts all other factors, whether voluntary or involuntary, as a cause of death.
Since the late 1970s, when daily smoking among high school seniors reached 30 precent , smoking rates among youth have declined . While the decline is impressive ,several important issues must be raised.
First, in the past several years,smoking rates among youth have declined very little. Second,in the late 1970s ,smoking among male high school seniors exceeded that among female by nearly 10 percent . The statistic is reversing.Third ,several recent studies have indicate high school dropouts have excessively high smoking rates, as much as 75 percent .
Finally, thouth significant declines in adolescent smoking have occurred in the past decade,no definite reasons for the decline exist. Within this context,the Naional Cancer Instiute (NCI) began its current effort to determine the most effecive measures to reduce smoking levesl among youth.
Every day there are over（）high school strdents who will become regular smoker.A
75B
23C
30D
3000
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50元B
1000元以上10000元以下C
5万元以上10万元以下D
50万元以上100万元以下
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