当用户端cisco路由器上用showinterface命令时line和lineprotocal可能出现的几种组合？（）。

A:line down；line protocol down B:line down；line protocol C:line up；line protocol down D:line up；line protocol up

“头缆’的英文是（）.

A:LINE B:HEAVING LINE C:TOWING LINE D:HEAD LINE

以下不能够读入空格字符的语句是

A:char line; line＝cin.get() B:char line; cin. get(line); C:char line; cin＞＞line; D:char line[2]; cin. getline(line,2);

以下不能够读入空格字符的语句是

A:char line; line＝ciget() B:char line; ci get(lin; C:char line; cin＞＞line; D:char line[2]; ci getline(line,2);

"That ______ is correct．

A:the initial price of the synthetic fiber line is cheaper B:the initial price of the manila line is cheaper C:the synthetic fiber line and the manila line have the same initial price D:it cannot tell if the initial price of the synthetic fiber line or the manila line is cheaper"

EASE THE STRAIN ON THE STERN LINE means________.

A:Don't take in the stern line B:Take in the stern line C:Sendout the stern line D:Heave up the stern line

When we get on the bus, we should wait ________.

A: in a line B: with a line C: in line D: on line

Children are standing ________ and getting on the bus.

A: on line B: in a line C: on a line D: in line

It is polite to wait _____ in publiC.

A: in the line B: in a line C: in line D: in one line