网友您好, 请在下方输入框内输入要搜索的题目:

题目内容 (请给出正确答案)

3、按允许通过的信号的频率范围的不同,滤波器又分为 (low⁃pass filter), (high⁃pass filter)和带通滤波器(band pass filter) 。


参考答案和解析
C
更多 “3、按允许通过的信号的频率范围的不同,滤波器又分为 (low⁃pass filter), (high⁃pass filter)和带通滤波器(band pass filter) 。” 相关考题
考题 允许一定频率范围内信号通过的滤波器是()。 A、高通滤波器B、低通滤波器C、带阻滤波器D、带通滤波器

考题 下列哪个滤镜可以减少渐变中的色带()A. Filter>Noise (杂色)B. Filter>style>DiffuseC. Filter>Distort>DisplaceD. Filter>Sharpen>USM

考题 下列哪个滤镜可以减少渐变中的色带A. Filter>NoiseB. Filter>style>DiffuseC. Filter>Distort>DisplaceD. Filter>Sharpen>USM

考题 Giventhewebapplicationdeploymentdescriptorelements:11.filter12.filter-nameParamAdder/filter-name13.filter-classcom.example.ParamAdder/filter-class14./filter...24.filter-mapping25.filter-nameParamAdder/filter-name26.servlet-nameMyServlet/servlet-name27.!--insertelementhere--28./filter-mappingWhichelement,insertedatline27,causestheParamAdderfiltertobeappliedwhenMyServletisinvokedbyanotherservletusingtheRequestDispatcher.includemethod?()A.include/B.dispatcherINCLUDE/dispatcherC.dispatcherinclude/dispatcherD.filter-conditionINCLUDE/filter-conditionE.filter-conditioninclude/filter-condition

考题 For a continuous operation diesel engine, a duplex filter unit would be the best arrangement becauseA.changing filter elements would not interrupt engine operationB.filtering occurs twice in each pass of oil through the systemC.clogging will not occurD.dropping pressure is half of that through a single filter unit

考题 以下语句正确的是() A、CommonDialogl.Filter=AllFiles|*.*|Pictures(*.Bmp)|*.BmpB、CommonDialogl.Filter="AllFiles"|"*.*"|"Pictures(*.Bmp)"|"*.Bmp"C、CommonDialogl.Filter="AllFiles|*.*|Pictures(*.Bmp)|*.Bmp"D、CommonDialogl.Filter={AllFiles|*.*|Pictures(*.Bmp)|*.Bmp|

考题 A dirty diesel engine oil filter element can best be detected by ______.A.visual inspection of the elementsB.the pressure drop across the filterC.high lube oil sump temperatureD.decrease in oil viscosity from the filter

考题 A packet is evaluated against three user-defined terms within a firewall filter and no match is found. What correctly describes the action the firewall filter will take for this packet?()A、The filter will permit the packet and take no additional actionB、The filter will reject the packet and send an ICMP message back to the senderC、The filter will discard the packet and take no additional actionD、The filter will permit the packet and write a log entry to the firewall log

考题 下列说法正确的是()A、Filter接口可以帮助我们在WEB应用中实施过滤技术B、Filter接口拥有Init(FilterConfig filterConfig)方法C、FilterChain是代码的过滤链,通过这个接口把过滤的任务在不同的Filter之间转移D、FilterConfig接口代表了Filter的配置E、FilterChain接口代表了Filter的配置

考题 可以将高频部分从声音中滤除的是()A、“High Pass”特效B、Parametric EQ特效C、”Low Pass”特效D、“Cutoff Pass”特效

考题 Which the three are true about servlet filters?()A、 A filter must implement the destroy methodB、 A filter must implement the doFilter methodC、 A servlet may have multiple filters associated with itD、 A servlet that is to have a filter applied to it must implement the javax.servlet.FilterChain  interfaceE、 A filter that is part of a filter chain passes control to the next filter in the chain by invoking the filterChain forward methodF、 For each  element in the web application deployment descriptor, multiple instances of a filter may be created by the web container

考题 关于Servlet Filter,下列说法正确的有() A、Filter其实就是一个ServletB、Filter可以产生responseC、Filter可以在Servlet被调用之前截获requestD、Filter可以哟活过来处理统一认证,过滤不雅字句等

考题 滤波器按其通过信号频率范围的不同,可分为()滤波器、()滤波器、()滤波器和()滤波器。

考题 按照所选通的信号频率范围的不同,滤波器分为()。A、高通滤波器B、带通滤波器C、低通滤波器D、带阻滤波器

考题 在J2EE中,在web.xml中定义过滤器时可以指定初始化参数,以下定义正确的是()。A、filter-mappingfilter-namesomeFilter/filter-nameinit-paramB、filter-mappingfilter-namesomeFilter/filter-nameC、filterfilter-namesomeFilter/filter-nameD、filterfiter-namesomeFilter/filter-nameinit-param

考题 filter()和find()的区别是filter()用于向下查找,find()用于同级查找。()

考题 What are BCP 38 (Best Common Practices 38)/RFC 2827 Ingress Packet Filtering Principles?()A、Filter Smurf ICMP packets.B、Filter as close to the core as possibleC、Filter as close to the edge as possibleD、Filter as precisely as possibleE、Filter both source and destination where possible

考题 When creating a SQL tuning set,which of the following steps allows the DBA to reduce the size of the SQL set by selecting specific operators and values?()A、 Filter versionsB、 Filter loadsC、 Filter tasksD、 Filter options

考题 单选题Placing a filter on the () of an oily water separator will "polish" the discharge but overloading must be avoided.A suction sideB discharge sideC by-pass pipeD sampling pipe

考题 单选题Whether using a centrifuge or a simple filter, oil cleaning and filtration will be the most effective when the oil is at a ().A high temperature and a high viscosityB high temperature and a low viscosityC low temperature and a high viscosityD low temperature and a low viscosity

考题 单选题For a continuous operation diesel engine, a duplex filter unit would be the best arrangement because ().A changing filter elements would not interrupt engine operationB filtering occurs twice in each pass of oil through the systemC clogging will not occurD dropping pressure is half of that through a single filter unit

考题 单选题以下有关自定义servlet、filter错误的是()A 是在uap项目的weB.xml中定义servlet、filterB 在模块中定义servlet、filter时,首先是模块的启动顺序决定了模块中所有servlet、filter的顺序C 如果同一个模块中servlet、filter定义在不同的文件中,文件被加载解析的顺序也会影响模块servlet、filter的顺序D 模块中同一个配置文件中定义的servlet、filter按被定义的前后顺序处理

考题 多选题You want to create a filter for your web application and your filter will implement javax.servlet.Filter. Which two statements are true?()AYour filter class must implement an init method and a destroy method.BYour filter class must also implement javax.servlet.FilterChain.CWhen your filter chains to the next filter, it should pass the same arguments it received in its doFiltermethod.DThe method that your filter invokes on the object it received that implements javax.servlet.FilterChaincan invoke either another filter or a servlet.EYour filter class must implement a doFilter method that takes, among other things, anHTTPServletRequest object and an HTTPServletResponse object.

考题 单选题When creating a SQL tuning set,which of the following steps allows the DBA to reduce the size of the SQL set by selecting specific operators and values?()A  Filter versionsB  Filter loadsC  Filter tasksD  Filter options

考题 多选题Which the three are true about servlet filters?()AA filter must implement the destroy methodBA filter must implement the doFilter methodCA servlet may have multiple filters associated with itDA servlet that is to have a filter applied to it must implement the javax.servlet.FilterChain  interfaceEA filter that is part of a filter chain passes control to the next filter in the chain by invoking the filterChain forward methodFFor each  element in the web application deployment descriptor, multiple instances of a filter may be created by the web container

考题 单选题Copper is often used as an electrical conductor because it ().A has high resistance at low temperaturesB has a highly polished surfaceC is able to pass current with little oppositionD holds insulation together well

考题 多选题按照所选通的信号频率范围的不同,滤波器分为()。A高通滤波器B带通滤波器C低通滤波器D带阻滤波器

考题 单选题可以将高频部分从声音中滤除的是()A “High Pass”特效B Parametric EQ特效C ”Low Pass”特效D “Cutoff Pass”特效