【多选题】【消耗次数:1】
下面属于典型帧频的有( )。
24f/s
25f/s
28f/s
30f/s
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相关题目
【单选题】 关于奈氏判据及其辅助函数F(s)=1+G(s)H(s),错误的说法是()
①  F(s)的零点就是开环传递函数的极点
②  F(s)的极点就是开环传递函数的极点
③  F(s)的零点数与极点数相同
④  F(s)的零点就是闭环传递函数的极点
【多选题】 设函数f: S?R+, S=(0, 1), f(x)=1/x,则它是:
①  满射;
②  单射;
③  双射;
④  函数.
【多选题】 设函数f: S?R, S=[0, +∞), f(x)=1/(x+1),则它是:
①  满射;
②  单射;
③  双射;
④  函数.
【判断题】 设函数f: S?R, S=[0, +∞), f(x)=1/(x+1),则它是单射不是满射。
①  正确
②  错误
【简答题】 设函数f: S?R+, S=(0, 1), f(x)=1/x,试求其单满双射性质。
【简答题】 设函数f: S?R, S=[0, +∞), f(x)=1/(x+1),试求其单满双射性质。
【判断题】 设函数f: S?R+, S=(0, 1), f(x)=1/x,则它是单射不是满射。
①  正确
②  错误
【单选题】 设函数f: S<img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/F388E7EE9892B38FECEEB653227F230A.png data-tex=\mapsto />S, S=[0, 1], f(x)=x/2+1/4,则它是:
①  是满射不是单射;
②  是单射不是满射;
③  是双射;
④  都不是.
【单选题】 设有如下函数定义 int f(char *s) { char *p=s; while(*p!=’\0’) p++; return(p-s); } 在主函数中用cout<<f(“good”)调用上述函数, 则输出结果为( )。
①  3
②  4
③  5
④  6
【单选题】 设有如下函数定义 int f(char *s) { char *p=s; while(*p!=’\0’) p++; return(p-s); } 在主函数中用cout<<f(“good”)调用上述函数, 则输出结果为( )
①  3
②  4
③  5
④  6
随机题目
【单选题】 Good morning, Dr Johnson’s office. Can I help you?
①  Speaking, please
②  I’d like to make an appointment, please
③  Yes, go on
④  No, you can’t
【单选题】 The population of many Alaskan cities has __________ doubled in the past three years.
①  larger than
②  as great as
③  more than
④  as many as
【单选题】 The match was cancelled because most of the members __________ a match without a standard court.
①  objected to having
②  objected to have
③  were objected to have
④  were objected to having
【单选题】 - Shall we sit up here on the grass or down there near the water?
①  I’d rather stay here if you don’t mind
②  Sorry, I don’t like neither
③  Certainly, why not?
④  Yes, we like these two places
【单选题】 He said he would continue a support us _____ we didn’t break the rules.
①  as well as
②  as soon as
③  as far as
④  as long as
【单选题】 Can I have a look at your passport?
①  It is here
②  Here is it
③  Here you are
④  No, you can’t
【单选题】 Her sun – tanned face suggested that she __________ in excellent health.
①  be
②  is
③  was
④  were
【单选题】 Yesterday was my birthday. My mother .
①  made a cake to me
②  made a cake me
③  made for me a cake
④  made me a cake
【单选题】 That probably explains why public opinion is broadly __________ euthanasia (安乐死), or at least certain forms of it.
①  in relation to
②  in contrast to
③  in excess of
④  in favor of
【单选题】 Young children often can’t __________ between TV programs and commercials.
①  separate
②  distinguish
③  compare
④  contrast