艾柱的规格包括
A.小柱
B.细柱
C.中柱
D.大柱
E.粗柱
参考答案:A,C,D
There are a kind of persons who use computer to deal with data and produce some information,but they do not change the hardware system and the software system.Which kind of person are they
A.system architect
B.language creator
C.terminal user
D.computer scientist