A. latency and loss
B. compression results
C. traffic (by application)
D. CRC and alignment errors
E. user access (by username)
第1题:
以下程序段的输出结果为( )。 int j=2 switch (j){ Case 2: system.out.print("two."): Case 2+1: System.out.println("three."); break: default: System.out.println (“value is”+j): Break }A.B.two
A.two.three.
B.two
C.three
D.value is 2
第2题:
第3题:
第4题:
4.—_________ Mike________ his homework in the evening?
—No,he doesn't.
A. Do;does
B. Does;do
C. Do;do
D. Does;does
第5题:
第6题:
(4). 在数据库xlm_course中的choose表中做如下修改: A. 将选课编号字段choose_id的字段名改为id,类型改为int(4); B. 将成绩字段report的字段名改为score,类型改为decimal(6,2); C. 将成绩字段score调整到学号字段Student_id之后。