It is believed that the tradition of having a pine tree as a Christmas Tree comes from Germany.()
第1题:
在考生文件夹中为HILL文件夹中的TREE.exe文件建立名为TREE的快捷方式。
第2题:
A.multipart-to-multipointEVC(E-LAN)
B.hubspokeEVC(E-Tree)
C.pointtopointEVC(E-Line)
D.rootedmultipointEVC(E-Tree)
E.point-to-multipointEVC(E-Tree)
第3题:
tree.add(6); tree.add(1); tree.add(1); 则遍历树集tree之后,可以输出1,1,6。()
第4题:
考虑如下代码:
class Tree{}
class Pine extends Tree{}
class Oak extends Tree{}
public class Forest {
public static void main( String[] args ) {
Tree tree = new Pine();
if( tree instanceof Pine )
System.out.println( "Pine" );
if( tree instanceof Tree )
System.out.println( "Tree" );
if( tree instanceof Oak )
System.out.println( "Oak" );
else
System.out.println( "Oops" );
}
}
则输出结果中有哪些?
A.Pine B.Tree C.Forest D.Oops E.无输出
第5题:
A.rootedmultipointEVC(E-Tree)
B.point-to-pointEVC(E-Line)
C.point-to-multipointEVC(E-Tree)
D.hubspokeEVC(E-Tree)
E.multipoint-to-multipointEVC(E-LAN)
第6题:
1、tree.add(6); tree.add(1); tree.add(1); 则遍历树集tree之后,可以输出1,1,6。()