A.service mysqld start
B.chkconfig mysqld on
C./etc/init.d/mysqld start
D.service mysqld stop
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A.max()
B.min()
C.sum()
D.avg()
A.select * from student order by name desc
B.select * from student order by name asc
C.select * from student group by name desc
D.select * from student group by name
A.add
B.change
C.modify
D.drop
A.where
B.group by
C.ather
D.limits
A.select max(age)from student
B.select min(age)from student
C.select sum(age)from student
D.select avg(age)from student
最新試題
判斷文件file是否可執(zhí)行,可以用()
ipables是開(kāi)源的軟件防火墻。
關(guān)于硬件防火墻說(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。
ipables是一款開(kāi)源的軟件防火墻。
iptables命令中-t選項(xiàng)指定()
刪除/etc/httpd/conf/httpd.conf文件中空白行可以使用命令()
軟件防火墻使用的資源要比硬件防火墻少。
下列選項(xiàng)中關(guān)于iptables的選項(xiàng)說(shuō)法正確的是()
硬件防火墻可節(jié)省系統(tǒng)的資源。