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【单选题】
()第一代计算机网络也叫( )。
A.
多个计算机互联的计算机网络
B.
面向终端的计算机网络
C.
国际标准化的计算机网络
D.
以高速多媒体应用为核心的第四代计算机网络
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举一反三
【单选题】Some firms have cut workers’pay below the level set in their contract, a _______ that is illegal in Germany.
A.
habit
B.
tradition
C.
practice
D.
training
查看完整题目与答案
【单选题】Ad man Rosser Reeves believes that firms should develop a USP for each brand and stick to it. For what does USP stand?
A.
unique selling proposition
B.
universally strategic practice
C.
unique services practice
D.
unique sales pitch
E.
unique selling product
查看完整题目与答案
【简答题】相同情况下,AM、DSB-SC、SSB、VSB、FM这5种调制系统中,有效性最好的是_______,有效性最差的是_______,可靠性最好的是______。
查看完整题目与答案
【单选题】It is stated in the passage that__________.
A.
the United States is the first country to practice public relations
B.
some public relations firms have only one person
C.
there are more public relations firms in the U.S. than in any other place in the world
D.
a large percentage of employees in public relations work in profit-oriented sectors.
查看完整题目与答案
【判断题】AM, DSB-SC, SSB, VSB can use coherent demodulation.
A.
正确
B.
错误
查看完整题目与答案
【简答题】Wall Street firms have traditionally compensated their traders with a share of the trading profits that they generated. How might this practice have affected traders’ willingness to assume risk? What ...
查看完整题目与答案
【单选题】The MM theory with taxes implies that firms should issue maximum debt. In practice, this does not occur because
A.
debt is more risky than equity
B.
bankruptcy is a disadvantage to debt.
C.
the weighted average cost of capital is inversely related to the debt-equity ratio.
D.
the weighted average cost of capital is directly related to the debt-equity ratio.
查看完整题目与答案
【判断题】为了提高AM系统的调制效率,可采用DSB-SC调制;为了提高DSB-SC系统的有效性,可采用SSB调制;SSB设备复杂,存在技术难点,而VSB调制的滤波器较容易设计。
A.
正确
B.
错误
查看完整题目与答案
【判断题】DSB-SC、常规AM、SSB、及VSB系统的系统增益均是解调增益的一半。
A.
正确
B.
错误
查看完整题目与答案
【判断题】DSB-SC、常规AM、SSB、及VSB系统的系统增益均是解调增益的一半。
A.
正确
B.
错误
查看完整题目与答案
相关题目：
【单选题】Some firms have cut workers’pay below the level set in their contract, a _______ that is illegal in Germany.
A.
habit
B.
tradition
C.
practice
D.
training
查看完整题目与答案
【单选题】Ad man Rosser Reeves believes that firms should develop a USP for each brand and stick to it. For what does USP stand?
A.
unique selling proposition
B.
universally strategic practice
C.
unique services practice
D.
unique sales pitch
E.
unique selling product
查看完整题目与答案
【简答题】相同情况下,AM、DSB-SC、SSB、VSB、FM这5种调制系统中,有效性最好的是_______,有效性最差的是_______,可靠性最好的是______。
查看完整题目与答案
【单选题】It is stated in the passage that__________.
A.
the United States is the first country to practice public relations
B.
some public relations firms have only one person
C.
there are more public relations firms in the U.S. than in any other place in the world
D.
a large percentage of employees in public relations work in profit-oriented sectors.
查看完整题目与答案
【判断题】AM, DSB-SC, SSB, VSB can use coherent demodulation.
A.
正确
B.
错误
查看完整题目与答案
【简答题】Wall Street firms have traditionally compensated their traders with a share of the trading profits that they generated. How might this practice have affected traders’ willingness to assume risk? What ...
查看完整题目与答案
【单选题】The MM theory with taxes implies that firms should issue maximum debt. In practice, this does not occur because
A.
debt is more risky than equity
B.
bankruptcy is a disadvantage to debt.
C.
the weighted average cost of capital is inversely related to the debt-equity ratio.
D.
the weighted average cost of capital is directly related to the debt-equity ratio.
查看完整题目与答案
【判断题】为了提高AM系统的调制效率,可采用DSB-SC调制;为了提高DSB-SC系统的有效性,可采用SSB调制;SSB设备复杂,存在技术难点,而VSB调制的滤波器较容易设计。
A.
正确
B.
错误
查看完整题目与答案
【判断题】DSB-SC、常规AM、SSB、及VSB系统的系统增益均是解调增益的一半。
A.
正确
B.
错误
查看完整题目与答案
【判断题】DSB-SC、常规AM、SSB、及VSB系统的系统增益均是解调增益的一半。
A.
正确
B.
错误
查看完整题目与答案