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【简答题】
具有6.5MHz带宽的某高斯信道,若信道中信号功率与噪声功率谱密度之间比为45.5 MHz,则它的信道容量为()。
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参考答案:
举一反三
【单选题】下列运算中,结果正确的是(  )
A.
2+x=2x
B.
- 1 4 x 2 +0.25x 2 =0
C.
3ab-ab=3
D.
x 2 +x 2 +x 2 =x 6
【简答题】乘务制度通常采用_____、_____两种。
【单选题】In the first paragraph the author infers that project management has______.
A.
stayed the same during the last 180 years
B.
become worse during the last 180 years
C.
slightly worsened during the last 180 years
D.
slightly improved during the last 180 years
【简答题】The Tang Dynasty was also the golden age of literature, which produced the most brilliant poetry of the country. Among the hundreds poets of the Tang Dynasty, the best known are _________, ___________...
【简答题】The icon in Englsih Literature in 14th century is Chaucer, whose work is still enjoyed by today's readers. In 15th century, poet and playwright stood out as the most famous writer in the world, who wr...
【单选题】"坷垃" ,是 ( )的俗称。
A.
粒状结构
B.
块状结构
C.
核状结构
D.
柱状结构
【单选题】下列计算正确的是(    )
A.
3x-5x=-2x
B.
3x 2 +x=4x 3
C.
-7a+4b='-11ab'
D.
-3ab 2 -ab 2 =-4ab
【多选题】云峰寺三绝是( )
A.
包骨真身
B.
还愿挂铃
C.
铁索岭
D.
空王佛
【单选题】下面各组词语中读音完全正确的一项是
A.
反省 (xǐng) 校对 (xiào) 相时而动 (xiāng)
B.
啜泣 (zhuì) 纤维 (qiān) 拈轻怕重 (niān)
C.
伪劣 (liè) 结束 (sù) 无人问津 (jīng)
D.
干涸 (hé) 褴楼 (lán) 不无裨益 (bì)
【单选题】苏轼治理西湖,疏通河道、挖掘淤泥、清除葑草,并修筑了
A.
灵隐寺
B.
花园
C.
大坝
D.
长堤
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