Which two statements are true about the Automatic Workload Repository （AWR）（） All AWR tables belong to the SYSTEM schema.。 The AWR contains systemwide tracing and logging information.。 The snapshots collected by the AWR are accessible through data dictionary views.。 The snapshots collected by the AWR are used by self-tuning components in the database.。
在进行变压器的空载试验和负载试验时，若试验频率偏差较大，则下列参数中与频率无关的是（）。 空载损耗。 空载电流。 绕组的电阻损耗。 绕组的涡流损耗。 由漏磁通引起的构件涡流损耗。 阻抗电压的有功分量。 阻抗电压的无功分量。
Choose the false statement concerning the use of CiscoWorks Internetwork Performance Monitor (IPM) in a Teleworker deployment.（） IPM should not be run on a production network. 。 IPM helps verify if a Service Provider is meeting the Service Level Agreement. 。 IPM contains a database that can store data on latency, jitter, and drops of voice packets over a period of weeks or months. 。 The QoS service policy should contain an allocation of sufficient bandwidth in the priority queue (LLQ) for both the SAA probe simulating a voice call and the voice call. If not, voice quality will suffer.。
正常生产情况下稳定区轻油产品的进罐前压力应控制在（） 越高越好。 0.4MPa左右。 越低越好。
When the doSomething method is called， after which line does the Object created in line 5 become available for garbage collection？（） Line 5。 Line 6。 Line 7。 Line 8。 Line 9。 Line 10。
以下关于杆件性质的说法正确的有（）。
