题目内容

下列的义项哪些应该合起来成为“花1”,哪些是“花2”的义项,应不应该还有一个“花3”?(注:“花1花2花3”是三个同形同音词。)①种子植物的有性繁殖器官:掐了一朵花。②供观赏的植物:买了一盆花。③颜色错杂:这布太花了点儿。④用掉:花了三元钱。⑤姓:小李广花荣。⑥模糊不清:眼睛花了。

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有以下程序main(){int i,s=1;for (i=1;i<50;i++) if((i%5==0)&&(i%3==0)) s+=i;printf("%d\n",s);}程序的输出结果是()

A. 409
B. 277
C. 1
D. 91

The units of data exchanged by a link-layer protocol are called ( ).

A. datagrams
B. frames
C. segments
D. messages

Which of the following protocols is not a link-layer protocol? ( )

A. Ethernet
B. PPP
C. HDLC
D. IP

In Link Layer Services of Ethernet, Error Correction is:

A. Cyclic Redundancy Check
B. Internet checksum
C. Read after Write
D. NONE

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