A.select * from student
B.select name from student
C.delete from student
D.update name from student
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A.select * from class
B.drop * from class
C.modify * from class
D.change * from class
A.select * from student order by named esc
B.select * from student order by name asc
C.select * from student group by named esc
D.select * from student group by name
A.select avg(score)from stu
B.select max(score)from stu
C.select min(score)from stu
D.select sum(score)from stu
A.where
B.group by
C.ather
D.limits
A.drop table abc
B.create table if exists abc
C.create database abc
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最新試題
軟件防火墻使用的資源要比硬件防火墻更少。
在設(shè)置iptables規(guī)則時(shí),不指定表時(shí),規(guī)則將保存在filete表中。
iptables四表中能實(shí)現(xiàn)端口映射的表是()
iptables中的filte表有哪幾個(gè)規(guī)則鏈()
ipables是一款開(kāi)源的軟件防火墻。
下列關(guān)于iptables常用命令解釋正確的是()
防火墻一般可分為()
以下防火墻說(shuō)法正確的是()
執(zhí)行命令“seq6”將產(chǎn)生的數(shù)字序列是只有6。
硬件防火墻可節(jié)省系統(tǒng)的資源。