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【单选题】
关于电磁波，下列说法正确的是 [     ]
A.
光不属于电磁波
B.
电磁波的波长越短则频率越低
C.
可以用电磁波传递信息和能量
D.
不同波长的电磁波在真空中传播速度不同
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参考答案：
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【单选题】校配金属镜架时要注意防止焊点断裂;使用工具力量不要过大;( );加热要适当;脚套应加热弯曲。
A.
不要多个整形钳合用
B.
不要取下镜片
C.
铰链不要受力
D.
桩头不要受力
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【判断题】刘某为一家旅游公司在街头发放、张贴广告。
A.
正确
B.
错误
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【简答题】Write a letter to the boss of the shop which you worked for last summer. Ask him to write a letter of recommendation for you to Mr. Wang, the personnel manager at Parkson. Department Store, Beijing. Y...
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【单选题】下列( )符号只能进行单行注释
A.
//
B.
\\
C.
/
D.
无法知道
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【判断题】刘某为一家旅游公司在街头发放、张贴广告。
A.
正确
B.
错误
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【单选题】以下关于ICMP不同类型的“目的不可达”报文的描述中,错误的是
A.
目的不可达报文是指：路由器寻址出错
B.
主机不可达是指：可能是目的主机不工作或不存在
C.
协议不可达是指：分组要交付的应用进程没有运行
D.
目的网络不可知是指：路由器根本不知道关于目的网络的信息
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【单选题】By 'at best, the results point to the least change people can expect', (Paragraph 3) the researchers try to tell us that
A.
the impact of climate change is relatively minor.
B.
the global warming is inevitable in the near future.
C.
concentrations of greenhouse gases cannot be held steady.
D.
the atmospheric conditions will be better than people think.
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【单选题】By 1950, the results of attempts to relate brain processes to mental experience appeared rather discouraging. Such variations in size, shape, chemistry, conduction speed, excitation threshold, and the...
A.
scientists have reached a consensus on the relationship between brain processes and mental experience
B.
variations in nerve cells are proved to be significantly correlated with mental experience
C.
attempts to correlate mental experience with brain processes have been viewed with pessimism
D.
scientists are indifferent to the manifold dimensions of mental experience
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【单选题】下列( )符号只能进行单行注释
A.
//
B.
\\
C.
/
D.
/**/
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【单选题】Survey results indicate that smoking and alcohol and marijuana(大麻) use increased among residents of Manhattan during the 5～8 weeks after the terrorist attacks on the World Trade Center which took plac...
A.
alcohol
B.
marijuana
C.
cigarettes
D.
cocaine
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相关题目：
【单选题】校配金属镜架时要注意防止焊点断裂;使用工具力量不要过大;( );加热要适当;脚套应加热弯曲。
A.
不要多个整形钳合用
B.
不要取下镜片
C.
铰链不要受力
D.
桩头不要受力
查看完整题目与答案
【判断题】刘某为一家旅游公司在街头发放、张贴广告。
A.
正确
B.
错误
查看完整题目与答案
【简答题】Write a letter to the boss of the shop which you worked for last summer. Ask him to write a letter of recommendation for you to Mr. Wang, the personnel manager at Parkson. Department Store, Beijing. Y...
查看完整题目与答案
【单选题】下列( )符号只能进行单行注释
A.
//
B.
\\
C.
/
D.
无法知道
查看完整题目与答案
【判断题】刘某为一家旅游公司在街头发放、张贴广告。
A.
正确
B.
错误
查看完整题目与答案
【单选题】以下关于ICMP不同类型的“目的不可达”报文的描述中,错误的是
A.
目的不可达报文是指：路由器寻址出错
B.
主机不可达是指：可能是目的主机不工作或不存在
C.
协议不可达是指：分组要交付的应用进程没有运行
D.
目的网络不可知是指：路由器根本不知道关于目的网络的信息
查看完整题目与答案
【单选题】By 'at best, the results point to the least change people can expect', (Paragraph 3) the researchers try to tell us that
A.
the impact of climate change is relatively minor.
B.
the global warming is inevitable in the near future.
C.
concentrations of greenhouse gases cannot be held steady.
D.
the atmospheric conditions will be better than people think.
查看完整题目与答案
【单选题】By 1950, the results of attempts to relate brain processes to mental experience appeared rather discouraging. Such variations in size, shape, chemistry, conduction speed, excitation threshold, and the...
A.
scientists have reached a consensus on the relationship between brain processes and mental experience
B.
variations in nerve cells are proved to be significantly correlated with mental experience
C.
attempts to correlate mental experience with brain processes have been viewed with pessimism
D.
scientists are indifferent to the manifold dimensions of mental experience
查看完整题目与答案
【单选题】下列( )符号只能进行单行注释
A.
//
B.
\\
C.
/
D.
/**/
查看完整题目与答案
【单选题】Survey results indicate that smoking and alcohol and marijuana(大麻) use increased among residents of Manhattan during the 5～8 weeks after the terrorist attacks on the World Trade Center which took plac...
A.
alcohol
B.
marijuana
C.
cigarettes
D.
cocaine
查看完整题目与答案
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