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【单选题】
关于衡量网络性能的指标,下列说法不正确的是_____。
A.
带宽,通常是指单位时间内网络能够传输的最大二进制位数,它是衡量网络最高传输速率或网络传输容量、网络传输能力的一个指标
B.
时延,通常是指一个数据分组(可以是数据包、数据报或数据帧)的网络传输时间,它是衡量网络传输时间和响应时间的一个指标
C.
误码率,通常是指数据传输中的误码占传输的总码数的百分比,有时也指误码在传输过程中出现的频率,它是衡量规定时间内数据传输正确性或可靠性的一个指标
D.
除以上网络性能指标外,还有许多其他的性能指标;但上述的带宽和吞吐量应是相同的概念
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举一反三
【单选题】According to the woman, the war memorial is ___________.
A.
easy to find
B.
impossible to notice
C.
a little difficult to see
D.
o
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【单选题】According to the passage, what might be a barrier to marriage in 2050 ?
A.
Age and education.
B.
Influence from the outside world.
C.
Practice of non-marriage.
D.
Financial independence.
查看完整题目与答案
【判断题】( ) 3.According to Professor Zog, there is no life on Earth.
A.
正确
B.
错误
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【单选题】According to the speaker, why are the humanities important?
A.
They provide us with facts, truth and objectivity.
B.
They provide us with social workers, teachers and artists.
C.
They provide us with many things that we never thought of before.
D.
They provide us with the ability to help others in our local community.
查看完整题目与答案
【判断题】类体中private修饰的变量在本类中能访问,类生成的对象也能访问。( 错 )
A.
正确
B.
错误
查看完整题目与答案
【单选题】According to family members, Boeing is mainly concerned with:
A.
Profits
B.
Safty
C.
Lawsuits
D.
Compensation
查看完整题目与答案
【判断题】类体中private修饰的变量在本类中能访问，类生成的对象也能访问。
A.
正确
B.
错误
查看完整题目与答案
【单选题】According to the conversation, which statement is true?
A.
The number of city dwellers(城市居民） should be controlled.
B.
City dwellers should be aware of the problem.
C.
The government should limit the number of vehicles in a city.
D.
The Government should be aware of the problem.
查看完整题目与答案
【多选题】关于双抗体夹心法 ELISA,正确的表述是
A.
使用分别针对抗原不同决定基的两种单克隆抗体作酶标记
B.
一种单克隆抗体作为固相抗体,另一种作为酶标抗体
C.
可使标本和酶标抗体同时加入
D.
采用高亲和力的单克隆抗体可提高测定的敏感性和特异性
E.
用于检测二价或二价以上的抗原
查看完整题目与答案
【单选题】According to the writer, when one door closes, _____________________.
A.
another door certainly opens
B.
other opportunities will come to you
C.
another door will not necessarily open
D.
things will change from bad to good
查看完整题目与答案
相关题目：
【单选题】According to the woman, the war memorial is ___________.
A.
easy to find
B.
impossible to notice
C.
a little difficult to see
D.
o
查看完整题目与答案
【单选题】According to the passage, what might be a barrier to marriage in 2050 ?
A.
Age and education.
B.
Influence from the outside world.
C.
Practice of non-marriage.
D.
Financial independence.
查看完整题目与答案
【判断题】( ) 3.According to Professor Zog, there is no life on Earth.
A.
正确
B.
错误
查看完整题目与答案
【单选题】According to the speaker, why are the humanities important?
A.
They provide us with facts, truth and objectivity.
B.
They provide us with social workers, teachers and artists.
C.
They provide us with many things that we never thought of before.
D.
They provide us with the ability to help others in our local community.
查看完整题目与答案
【判断题】类体中private修饰的变量在本类中能访问,类生成的对象也能访问。( 错 )
A.
正确
B.
错误
查看完整题目与答案
【单选题】According to family members, Boeing is mainly concerned with:
A.
Profits
B.
Safty
C.
Lawsuits
D.
Compensation
查看完整题目与答案
【判断题】类体中private修饰的变量在本类中能访问，类生成的对象也能访问。
A.
正确
B.
错误
查看完整题目与答案
【单选题】According to the conversation, which statement is true?
A.
The number of city dwellers(城市居民） should be controlled.
B.
City dwellers should be aware of the problem.
C.
The government should limit the number of vehicles in a city.
D.
The Government should be aware of the problem.
查看完整题目与答案
【多选题】关于双抗体夹心法 ELISA,正确的表述是
A.
使用分别针对抗原不同决定基的两种单克隆抗体作酶标记
B.
一种单克隆抗体作为固相抗体,另一种作为酶标抗体
C.
可使标本和酶标抗体同时加入
D.
采用高亲和力的单克隆抗体可提高测定的敏感性和特异性
E.
用于检测二价或二价以上的抗原
查看完整题目与答案
【单选题】According to the writer, when one door closes, _____________________.
A.
another door certainly opens
B.
other opportunities will come to you
C.
another door will not necessarily open
D.
things will change from bad to good
查看完整题目与答案