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<a href="javascript%3Avoid(0)">①②③</a>
C:<a href="javascript%3Avoid(0)">②③④</a>
D:<a href="javascript%3Avoid(0)">①②④</a>
">4.自我调适的主要方法,有( )<a href="javascript%3Avoid(0)">①②③④</a>
B:<a href="javascript%3Avoid(0)">①②③</a>
C:<a href="javascript%3Avoid(0)">②③④</a>
D:<a href="javascript%3Avoid(0)">①②④</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>
">5.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>
">7.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>
">8.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)">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>
">9.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)">甲基丙烯腈</a>
C:<a href="javascript%3Avoid(0)">丙烯</a>
">10.烯丙基自由基自阻聚的单体 选项: A:<a href="javascript%3Avoid(0)">甲基丙烯酸甲酯</a>
B:<a href="javascript%3Avoid(0)">甲基丙烯腈</a>
C:<a href="javascript%3Avoid(0)">丙烯</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>
">11.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)">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>
">12.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>
<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>
">13.( )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)">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>
">14.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)">构图</a>
C:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">透视</a>
D:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">色彩</a>
">15.以下属于漫画基本功的有( )。 选项: A:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">线条</a>
B:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">构图</a>
C:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">透视</a>
D:<a href="https://mooc1-1.chaoxing.com/work/javascript:void(0)">色彩</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>
">16.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>