【单选题】认真阅读代码,选择正确的选项 public class MyClass { public static void main(String arguments[]) { amethod(arguments); } public void amethod(String[] arguments) { System.out.println(arguments); System.ou...
【简答题】.根据下面一组等式 S 1 =1 S 2 =2+3=5 S 3 =4+5+6=15 S 4 =7+8+9+10=34 S 5 =11+12+13+14+15=65 S 6 =16+17+18+19+20+21=111 S 7 =22+23+24+25+26+27+28=175 … … … … … … … … 可得 .
【判断题】Let V denote the union of the first and third quadrants in the xy -plane. , If u is in V and λ is any scalar, we can say that V is a vector space .