【简答题】用所给词的适当形式填空 1. We're doctors, so it's our _______ (duty) to save patients. 2. The road is _______ (crowd). Mr. Wang drives his car slowly. 3. What causes the _______ (ill)? 4. Did they enjoy _______ (...
【单选题】毛里求斯首次参加奥运会是在哪一年?( )
【单选题】It's our duty _________ the room every day. A. to clean B. cleaned C. clean D. cleans
【简答题】用括号中所给词的适当形式填空。 1. It is our duty (keep) our classroom clean. 2. Don't worry. There (be) plenty of time. 3. The students' (pronounce) isn't good, but it's improving. 4. John is worried about the comin...
【简答题】The second thing that they did was they ___1___ a phenomenal ___2____ action in cooperation by the people of China to this response. And the interesting thing is that people have ____3____ on that say...
【简答题】下表中的第 1 行和第 2 行列举了一个信源的统计特性,对其进行哈夫曼编码,画出编码过程,并将编码结果填入表的第三行。 符号集 {x i } x 1 x 2 x 3 x 4 x 5 x 6 概率分布 { p i } 0.40 0.20 0.1 3 0.11 0.09 0.0 7 Huffman 编码
【简答题】8 图5.4.1(这个图在习题册上翻一翻吧)所示的反相比例电路引入 负反馈,如果增大电阻Rf,则该电路的放大倍数将 (增大、减小),通频带将 (增大、减小)。
【单选题】对下面的程序进行编译与连接生成可执行文件c.exe,并在DOS命令提示符下输入: c I said ' I love China'! 程序代码如下: main(int argc,char*argv []) { printf('%d',argC) ; } 其输出结果为 ______ 。
【简答题】8 图5.4.1所示的反相比例电路引入 负反馈(电压串联、电压并联、电流串联、电流并联),如果增大电阻Rf,则该电路的放大倍数将 (增大、减小),通频带将 (增大、减小)。
【简答题】下表中的第 1 行和第 2 行列举了一个信源的统计特性,对其进行哈夫曼编码,画出编码过程,并将编码结果填入表的第三行,并计算编码效率。 符号集 {x i } x 1 x 2 x 3 x 4 x 5 x 6 概率分布 { p i } 0.40 0.20 0.1 3 0.11 0.09 0.0 7 Huffman 编码