【简答题】以下程序的执行结果为:def mean(*args): length=0 s=0 for e in args: s+=e length+=1 return s/lengthprint(mean(2,3,4,5,6))A. 4 B. 20 C. 6 D. 10
【判断题】锦纶的氨基含量比羊毛低得多,其染色饱和值低,染料分子主要靠范德华力和氢键与纤维结合,因此在拼混染色时容易获得均匀一致的颜色。
【单选题】Which of the following is NOT TRUE according to the passage?
A.
Today millions of Americans vacation abroad.
B.
Many Americans go abroad with the hope to meet a confidant.
C.
Summer is a special time for forming new friendships.
D.
Not many American like to stay in one place for a lifetime.
【简答题】Today, with easy access to the Internet, millions of young people have made new friends online. They share their happiness, sadness and even secrets with these friends. But is it advisable to look for...
【单选题】以下程序的执行结果为: def mean(*args): length=0 s=0 for e in args: s+=e length+=1 return s/length print(mean(2,3,4,5,6))
【简答题】阅读理解。 There are millions of used cell phones in the world today, the most of them just lay in our houses without any purpose. Everyday dozens of new cell phone models appeared. Today, you can find wha...
【判断题】腈纶纤维的饱和值和阳离子染料的饱和值是衡量腈纶染色性能和制定合理染色工艺的重要参数。
【单选题】以下程序的执行结果为: def mean(*args): length=0 s=0 for e in args: s+=e length+=1 return s/length print(mean(2,3,4,5,6))
【简答题】下面程序的功能是:统计存放在数列a中的n个数有多少个是不同的。具体做法是:变量left指向要被处理的数(从第2个元素开始),right指向数列最后一个元素。若a[left]与排在它前面的某个数组元素值相同,就用数组元素a[right]的值来替换a[left]的值,同时将变量right的值减1;否则将变量left的值加1,处理数列下一个元素,重复以上过程,直到left>right为止。Right的值...
【判断题】染色饱和值是指染料在任意温度下纤维上的最大上染量。