以下文字与答案无关
提示:有些试题内容 显示不完整,文字错误 或者 答案显示错误等问题,这是由于我们在扫描录入过程中 机器识别错误导致,人工逐条矫正总有遗漏,所以恳请 广大网友理解。
<a href="javascript%3Avoid(0)">信道编码又称差错控制编码、抗干扰编码或纠错编码</a>
<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">信道编码是提高系统的可靠性;</a>
<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">信道编码是提高系统的可靠性;</a>
<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">信源编码是提高系统的有效性;</a>
<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">信道编码又称差错控制编码、抗干扰编码或纠错编码</a>
<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">信道编码是提高系统的可靠性;</a>
<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">信道编码是提高系统的可靠性;</a>
<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">信源编码是提高系统的有效性;</a>
<a href="javascript%3Avoid(0)">大信噪比下宽带调频系统的制度增益很低。</a>
B:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">通过鉴频器后噪声的功率谱密度的形状为开口向下的抛物线。</a>
C:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">信号和噪声相互之间的影响可以忽略。</a>
D:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">制度增益与调频指数有关。</a>
">2.在大信噪比条件下分析非相干解调的解调增益,我们可以发现 。 选项: A:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">大信噪比下宽带调频系统的制度增益很低。</a>
B:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">通过鉴频器后噪声的功率谱密度的形状为开口向下的抛物线。</a>
C:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">信号和噪声相互之间的影响可以忽略。</a>
D:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">制度增益与调频指数有关。</a>
<a href="javascript%3Avoid(0)">系统特性不理想,存在乘性干扰;</a>
B:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">信道中存在噪声,即有加性干扰;</a>
C:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">由于系统增加了均衡器,所以产生了误码。</a>
D:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">突然有一个功率很大的电焊机工作了,产生的干扰与信号叠加,使信号波形产生失真;</a>
">3.对发生误码原因,下列哪种说法是错误的? 选项: A:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">系统特性不理想,存在乘性干扰;</a>
B:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">信道中存在噪声,即有加性干扰;</a>
C:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">由于系统增加了均衡器,所以产生了误码。</a>
D:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">突然有一个功率很大的电焊机工作了,产生的干扰与信号叠加,使信号波形产生失真;</a>
<a href="javascript%3Avoid(0)">语法错误信息</a>
C:<a href="javascript%3Avoid(0)">语法分析过程</a>
D:<a href="javascript%3Avoid(0)">语句序列</a>
">4.编译程序的语法分析器必须输出的信息是( )。 选项: A:<a href="javascript%3Avoid(0)">语法规则信息</a>
B:<a href="javascript%3Avoid(0)">语法错误信息</a>
C:<a href="javascript%3Avoid(0)">语法分析过程</a>
D:<a href="javascript%3Avoid(0)">语句序列</a>
<a href="javascript%3Avoid(0)">线性分组码的监督矩阵H]=P Ir]。</a>
B:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">由线性分组码的监督矩阵还不能确定线性分组码的生成矩阵。</a>
C:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">线性分组码监督矩阵的行数为监督码元个数,列数为码长;</a>
D:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">线性分组码的监督矩阵是用来说明监督码元与信息码元之间关系的矩阵;</a>
">5.对线性分组码的监督矩阵,下列哪种说法是错误的? 选项: A:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">线性分组码的监督矩阵H]=P Ir]。</a>
B:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">由线性分组码的监督矩阵还不能确定线性分组码的生成矩阵。</a>
C:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">线性分组码监督矩阵的行数为监督码元个数,列数为码长;</a>
D:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">线性分组码的监督矩阵是用来说明监督码元与信息码元之间关系的矩阵;</a>
<a href="javascript%3Avoid(0)">调频指数的持续增大能够持续适应输入信噪比变小的情况。</a>
B:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">调幅系统的抗干扰能力也很强。</a>
C:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">宽带调频输出信噪比相对于调幅的改善与它们的带宽比值的三次方成正比。</a>
D:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">调频系统以增加带宽来提高抗噪声性能。</a>
">6.下列有关宽带调频输出信噪比与调幅信号的输出信噪比的说法,正确的是 。 选项: A:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">调频指数的持续增大能够持续适应输入信噪比变小的情况。</a>
B:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">调幅系统的抗干扰能力也很强。</a>
C:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">宽带调频输出信噪比相对于调幅的改善与它们的带宽比值的三次方成正比。</a>
D:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">调频系统以增加带宽来提高抗噪声性能。</a>
<a href="javascript%3Avoid(0)">当码组仅用于检测错误时,若要求检测e个错误,则最小码距为:d0≥e +1 ;</a>
B:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">当码组仅用于纠正错误时,为纠正 t 个错误,要求最小码距为:d0 ≥2t +1 ;</a>
C:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">当码组既要检错,又要纠错时,为纠正t 个错误,同时检测e 个错误,则要求的最小码距为d0≥ e + t +1 (e > t );</a>
D:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">当码组仅用于检测错误时,若要求检测e个错误,则最小码距为:d0≥e-1。 </a>
">8.对最小码间距离d0与检错纠错能力的关系,下列哪种说法是错误的? 选项: A:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">当码组仅用于检测错误时,若要求检测e个错误,则最小码距为:d0≥e +1 ;</a>
B:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">当码组仅用于纠正错误时,为纠正 t 个错误,要求最小码距为:d0 ≥2t +1 ;</a>
C:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">当码组既要检错,又要纠错时,为纠正t 个错误,同时检测e 个错误,则要求的最小码距为d0≥ e + t +1 (e > t );</a>
D:<a href="javascript%3Avoid(0)"></a>
<a href="javascript%3Avoid(0)">当码组仅用于检测错误时,若要求检测e个错误,则最小码距为:d0≥e-1。 </a>
达盖尔
</a></li><li><a href="javascript%3Avoid(0)"></a></li>尼埃普斯
C:塔尔博特
D:阿拉格
">9.法国人_____拍摄出了世界上最早的照片。 选项: A:达盖尔
</a></li><li><a href="javascript%3Avoid(0)"></a></li>尼埃普斯
C:塔尔博特
D:阿拉格
<a href="javascript%3Avoid(0)">左右两方</a>
<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">铅笔</a>
C:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">碳笔</a>
D:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">毛笔</a>
">13.在素描学习中比较普遍利用的是( )。 选项: A:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">钢笔</a>
B:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">铅笔</a>
C:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">碳笔</a>
D:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">毛笔</a>
<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">速写</a>
C:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">复制</a>
D:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">临摹</a>
">14.( )是训练漫画基本的方法。 选项: A:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">素描</a>
B:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">速写</a>
C:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">复制</a>
D:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">临摹</a>
<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">媒体</a>
C:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">广告</a>
D:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">网络</a>
">15.漫画的统治领域是在( )。 选项: A:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">书本</a>
B:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">媒体</a>
C:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">广告</a>
D:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">网络</a>
<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">监督</a>
C:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">夸张</a>
D:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">宣传</a>
">16.()不是漫画的作用。 选项: A:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">教育</a>
B:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">监督</a>
C:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">夸张</a>
D:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">宣传</a>
<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">简约</a>
C:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">省略</a>
D:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">幽默</a>
">17.()不是漫画的特点。 选项: A:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">夸张</a>
B:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">简约</a>
C:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">省略</a>
D:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">幽默</a>
<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">油画</a>
C:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">漫画速写</a>
D:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">套路模式的漫画</a>
">18.()是叶浅予成就最高的领域。 选项: A:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">国画</a>
B:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">油画</a>
C:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">漫画速写</a>
D:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">套路模式的漫画</a>
<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">神情</a>
C:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">人体比例</a>
D:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">构思</a>
">19.掌握好( )是画好人体的基础。 选项: A:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">面的比例</a>
B:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">神情</a>
C:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">人体比例</a>
D:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">构思</a>
<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">毛笔</a>
C:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">铅笔</a>
D:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">美工笔</a>
">20.( )是硬笔漫画的主要工具,书写流畅,笔触变化较为灵活。 选项: A:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">钢笔</a>
B:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">毛笔</a>
C:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">铅笔</a>
D:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">美工笔</a>
<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">地图笔尖</a>
C:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">学生笔尖</a>
D:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">镝笔尖</a>
">21.蘸水笔比较常用的是( )。 选项: A:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">G笔尖</a>
B:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">地图笔尖</a>
C:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">学生笔尖</a>
D:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">镝笔尖</a>