What kind of filter is used to extract a single-freq. harmonic from the harmonic components contained in square wave? A: Low-pass Filter B: High-pass Filter C: Band-pass Filter D: Band-elimination Filter

Map对于map和filter方法使用正确的是（） A: Map本身没有map和filter方法 B: constmap0=newMap（）.set（1，’a’）.set（2，’b’）.set（3，’c’）；constmap1=newMap（[...map0].filter（（[k，v]）=>k<3））；//产生Map结构{1=>’a’，2=>’b’} C: newMap（）.set（1，’a’）.set（2，’b’）.set（3，’c’）..filter（（[k，v]）=>k<3）//产生Map结构{1=>’a’，2=>’b’} D: constmap2=newMap（[...map0].map（（[k，v]）=>[k*2，’_’+v]））；//产生Map结构{2=>’_a’，4=>’_b’，6=>’_c’}

We can employ the next filters to detect edges from an image: A: Roberts filter B: Sobel filter C: mean filter D: Gaussian filter

Please give the result of media filter: med{2,-3,10,5,-1} and med{2,2,80} are A: 10, 2 B: 2, 2 C: 2, 80 D: 10, 80

The filter [img=142x47]18031c9cd67f894.png[/img] is a lowpass filter

Matlab的二维中值滤波函数为() A: filter2 B: imhist C: edge D: medfilt2

下列关于Filter的描述中，正确的是 （）。 A: Filter只能过滤页面 B: Filter只能过滤Servlet C: Filter程序必须实现Filter接口 D: 一个web应用只能注册一个Filte

def is_odd(n):return n % 2 == 1newlist = filter(is_odd, range(1,11))print(list(newlist))

The advantage of this product is…… A: air humiliation and cleaning 2 in 1 B: no filter mats required C: both A and B

filter ____