电池体安装在铁架上时，应垫（），使之牢固可靠。 铁片。 布条。 缓冲胶垫。
Users are performing a large volume of inserts and deletes on the application tables in the APPS tablespace. You observe that there are several warning alerts being generated for the APPS tablespace space usage metrics. Currently， the warning threshold for the tablespace usage metrics is set to 70%. To make the generated alerts more useful as a problem identification tool， you want to reduce the frequency of alert generation for the tablespace usage metrics for the APPS tablespace. What should you do？（） Disable SQL tracing for the APPS tablespace.。 Disable logging attributes for the APPS tablespace.。 Modify the tablespace to be a dictionary-managed tablespace.。 Increase the critical threshold value for the tablespace space usage metrics for the APPS tablespace.。 Increase the warning threshold value for the tablespace space usage metric for the APPS tablespace.。
超高压输电线路单相跳闸熄弧较慢，是由于（）。 短路电流小。 单相跳闸慢。 潜供电流的影向。
离心泵需要密封的是外泄漏。
Which three activities are supported by the Data Recovery Advisor?（） Advising on block checksum failures。 Advising on inaccessible control files。 Advising on inaccessible block change tracking files。 Advising on empty password files。 Advising on invalid block header field value。
What kind of ports do Oracle Web Cache and Oracle Http Server come pre-configured with ？ （）
