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[问答题] 简述污泥膨胀的定义及其最主要的解决方法。

女性,54岁,急性胰腺炎行胆囊造瘘、胰腺引流术后,仍禁食、输液及抗感染治疗,并吸入高浓度氧,动脉血气分析为pH7.46,Pa0255mmHg,PaC0232mmHg。x线胸片示两肺有较广泛的点、片状阴影,心电图示窦性心动过速。对成人呼吸窘迫综合征的动脉血气分析符合() ["Pa02<60mmHg,PaC02<35mmHg","Pa02<60mmHg,PaC02<40mmHg","Pa02<70mmHg,PaC02<30mmHg","Pa02<90mmHg,PaC02<50mmHg","PaOZ<80mmHg,PaC02<60mmHg"] You are configuring the PROD database to use an internal tuning algorithm to monitor the performance of the workload. To achieve this configuration, you specify the following parameter settings in the SPFILE:        SGA_TARGET = 512M        SHARED_POOL_SIZE = 256M   Which two statements are true when modifying the SHARED_POOL_SIZE initialization parameter in the SPFILE? () [" Modifying the SHARED_POOL_SIZE initialization parameter cannot be accomplished if the SGA_TARGET initialization parameter is set to a non-zero value."," Modifying the value of the SHARED_POOL_SIZE initialization parameter to zero is not allowed if the SGA_TARGET initialization parameter is set to a nonzero value."," Increasing the value of the SHARED_POOL_SIZE initialization parameter does not increase the shared pool component size. It sets the lower limit for the size of this component."," Decreasing the value of the SHARED_POOL_SIZE initialization parameter does not reduce the size of the shared pool component immediately. It sets the lower limit for the size of this component."," Increasing the value of the SHARED_POOL_SIZE initialization parameter immediately increases the shared pool  component to the desired size by reallocating the additional memory from the auto-tuned memory components."," Decreasing the value of the SHARED_POOL_SIZE initialization parameter immediately shrinks the shared pool component to the desired size while reallocating the released memory to the memory components that are not auto-tuned."] A Dell customer decided to use IBM Director and xSeries to manage their servers.  They purchased 10 IBM x336 servers and they already have 75 various Dell servers.  Which TWO steps need to be verified to be able to manage the mixed environment with IBM Director?() ["Verify that the Dell systems have TCP\/IP enabled","Verify that the systems are running the IBM Director Agent","Verify that the managed systems are SMBIOS 2.1 and WfM 2.0 compliant","Verify that the Dell systems have at least a 1GB of memory installed","Install an SNMP agent on the Dell systems as IBM Director cannot manage Industry Standard non-IBM server"] View the Exhibit and examine the parameters. User A executes the following command to update the TRANStable: SQL> UPDATE B.trans SET tr_amt=tr_amt+500 WHERE c_code=’C005’; Before user A issues a COMMIT orROLLBACK command, user B executes the following command on the TRANS table: SQL> ALTER TABLE trans MODIFY (tr_type VARCHAR2(3));  What would happen in this scenario() ["The ALTER TABLE command modifies the column successfully.","The DDL operation gets higher priority and transaction for user A is rolled back.","The ALTER TABLE command waits indefinitely until user A ends the transaction.","The ALTER TABLE command fails after waiting for 60 seconds due to the resource being busy"] 导线的截面,一般应按什么选择()。 ["允许载流量","电流密度","机械强度"] 简述污泥膨胀的定义及其最主要的解决方法。
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