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A.arp
B.vrrp
C.icmp
D.tcp

A.一主一從
B.互為主從
C.一主多從
D.多主多從

A.set global sql_slave_skip_counter=1
B.set slave_skip_counter=1
C.從新做主從
D.重啟從的mysql服務(wù)

A.binlog-do-db=wg
B.binlog-ignore-db=wg
C.replicate-do-db=wg
D.replicate-ignore-db=wg

A.replicate-do-db=wg.name
B.replicate-do-table=wg.name
C.replicate-ignore-db=wg
D.binlog-ignore-db=wg

A.where
B.group by
C.ather
D.limits

A.FIND
B.SELECT
C.ALTER
D.DESC

A.select avg（num）from wg;
B.select max（num）from wg;
C.select min（num）from wg;
D.select sum（num）from wg;