有机肥料是含有有机物质，既能提供农作物多种（），又能培肥改良土壤的一类肥料。
A. 有机养分
B. 无机养分
C. 无机和有机养分
D. 矿质营养元素
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An existing master-slave setup is currently using a delayed replication of one hour. The master has crashed and the slave must be "rolled forward" to provide all the latest data. The SHOW SLAVE STATUS indicates the following values: RELAY_LOG_FILE =hostname-relay-bin.00004 RELAY_LOG_POS = 1383 Which command set would make the slave current?（）
A. Gtid_mode must be set to AUTO during point in time recoveries
B. Mysqlbinlog ignores arguments to – exclude-gtids-it means ignore all events with GTIDs
C. The server keeps track of which GTIDs have already been executed and skips those
D. Enforce_gtid_consistency is set to ON
In which scenario will you use the Flashback Transaction Query feature？（）
A. when you want to restore an important table that is dropped from the Recycle Bin
B. when you want to obtain the SQL statements to undo the deletion of some important records from a table by a transaction
C. when you want to restore a dropped user’s schema
D. when a row of a table is updated many times within a specific time period and you want all the versions of the row in the specified time period
经警服装每人每三年不超过（）元，超支自补。夜间守库人员，每人每天补助（）元。
民族区域自治制度体现了“三个结合”的基本特点，“三个结合”的具体内容是什么？
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