[多选] Which four statements correctly describe functions that are available in SQL? （）

A . INSTR returns the numeric position of a named character.
B . NVL2 returns the first non-null expression in the expression list.
C . TRUNCATE rounds the column, expression, or value to n decimal places.
D . DECODE translates an expression after comparing it to each search value.
E . TRIM trims the heading of trailing characters (or both) from a character string.
F . NVL compares two expressions and returns null if they are equal, or the first expression of they are not equal.
G . NULLIF compares twp expressions and returns null if they are equal, or the first expression if they are not equal.

A FastT Host FC-2 bus adapter， a U320 SCSI adapter， and three 10/100Mb Ethernet adapters have to be installed as optimally as possible. This is going to be a 24X7 system. The addition of extra PCI-cards is a major consideration as well. Based on the following， what is the best configuration？（）（1）Slot 1 66MHz Bus 1 （2）Slot 2 66MHz Bus 1 （3）Slot 3 100MHz Bus 2 （4）Slot 4 100Mhz Bus 2 （5）Slot 5 133Mhz Bus 3 （6）Slot 6 133Mhz Bus 3 Put the Ethernet adapters in slots 1， 2 and 3. Put the FastT HBA in slot 5. Put the U320 adapter in slot 6.。 Put the Ethernet adapters in slots 1， 4 and 6. Put the FastT HBA in slot 5. Put the U320 adapter in slot 3.。 Put the Ethernet adapters in slots 1， 2 and 4. Put the FastT HBA in slot 3. Put the U320 adapter in slot 5.。 Put the Ethernet adapters in slots 1， 2 and 3. Put the FastT HBA in slot 5. Put the U320 adapter in slot 4。《工程建设强制性条文》是工程建设现行（）标准中直接涉及人民生命财产安全、人身健康、环境保护和公众利益的条文。 A.国家。 B.行业。 C.国家和行业。 D.国家、行业和地方。 An administrator is configuring an application monitor. Upon encountering an unrecoverable error the administrator does not want the resource group to failover. How can the application monitor be configured toachieve this？（） Configure the application monitor with a restart count of 0。 Configure the application monitor with a monitor mode of Notify。 Configure the application monitor with a notify method of Monitor。 Configure the application monitor with a failure action of Notify。 Which command will allow the creation of a 10-character login user name？（） A.chlogin -a log_name=10。 B.chdev -l sys0 -a max_logname=10。 C.chusr extended_logname=true [userid]。 D.chuser login_name=10 extended_logname=true [userid]。危害税收征管罪中唯一的一个不能由单位构成的罪名是（）。偷税罪。抗税罪。骗取出口退税罪。逃避追缴欠税罪。 Which four statements correctly describe functions that are available in SQL? （）

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[多选] Which four statements correctly describe functions that are available in SQL? （）

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