（0.5分）When the expression first came into being，people refused to use it but 　　they began to accep...

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Thankyouisan_______yousaywhenofferedhelp.

expression explanation instruction introduction

通常FIR滤波器具有递归型结构

论述IIRFIR滤波器的异同

选词填空从下面方框中选择适当的选项填入短文中使短文通顺完整选项中有两项是多余的Aboycouldn’

比较IIR和FIR滤波器在性能和结构上各有什么优缺点

WhenTomgotontothestagehewasjustfrightenedandtherew

absent elegant ridiculous positive

FIR滤波器必是稳定的

Whentheexpressionfirstappearedpeoplerefusedtouseit

usually gradually frequently quickly

Therewasan_________expressiononherfacewhenshecamei

amused amusing amuse amusingly

下列关于FIR滤波器的说法中正确的是

FIR滤波器容易设计成线性相位特性 FIR滤波器的脉冲响应长度是无限的 FIR滤波器的脉冲响应长度是确定的对于相同的幅频特性要求，用FIR滤波器实现要比用IIR滤波器实现阶数低

Therewasan______expressiononherfacewhenshecamein.

amused amusing amuse amusingly

男16岁跑步后感到右胸胀痛胸闷憋气查体呼吸急促R28次/分右上肺叩诊鼓音呼吸音消失FIR105次/分

胸片胸部B超胸部CT 肺功能检查心电图

IIR和FIR数字滤波器的特点

WhenIsawherfacial______Iknewshewasangry.

appearance expression looking feeling

以下对FIR和IIR滤波器特性的论述中不正确的是

FIR滤波器主要采用递归结构 FIR滤波器容易做到线性相位 IIR滤波器可能是稳定的 IIR滤波器主要用来设计规格化的频率特性为分段常数的标准滤波器

HARQ技术的实现方式有

CC SC PIR FIR

已知某线性相位FIR滤波器的零点zi位于单位圆内则位于单位圆内的零点还有

A B C D

The_________onhisfacewaskindofstrangewhenItoldhimt

appearance looking expression description

Whentheexpressionfirstcameintobeingpeoplerefusedto

usually gradually frequently quickly

WhenmyfatherreturnedfromhistriptoJiuzhaigouhesaidt

influence expression experience expectation

（0.5分）When the expression first came into being，people refused to use it but 　　they began to accep...

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（0.5分）When the expression first came into being，people refused to use it but they began to accep...

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（0.5分）When the expression first came into being，people refused to use it but 　　they began to accep...