You have three databases， FINDB， PAYDB and ADMINDB， located in Sydney， Tokyo and Singapore respectively. You want to perform administrative tasks which include starting up and shutting down the databases， creating and managing tablespaces and database users， and taking regular backups， for all of the three databases from London. Which component must be enabled and running on each host machine to achieve your objective？（） Oracle Management Agent。 Enterprise Manager with Grid Control。 Enterprise Manager with Database Control。 Operating System Socket for incoming requests。 Real Application Cluster （RAC） with three instances。 Enterprise Manager with Generic Database Management。
清算假设
Given： Which three changes should be made to adapt this class to be used safely by multiple threads？（） declare reset（） using the synchronized keyword。 declare getName（） using the synchronized keyword。 declare getCount（） using the synchronized keyword。 declare the constructor using the synchronized keyword。 declare increment（） using the synchronized keyword。
Which statements are true regarding the creation of an incident package file by using the EM Workbench Support？（） You can add or remove the trace files to the package.。 You can create the incremental incident package ZIP file for new or modified diagnostic information for the incident package already created.。 You can add SQL test cases to the incident package.。 You cannot create an incremental incident package when the physical files are purged rom the ADR.。
浇注式沥青混凝土的特点是在较高施工温度下具有较好的流动性和施工和易性，由于沥青混合料有一定的流动性，只需要用摊铺整平机即可完成施工，不需碾压，并能达到规定的密实度和平整度
土体具有压缩性的主要原因是（）
