Which three objects are components of a menu module?（） Menus 。 Canvases 。 Object libraries 。 Visual attributes 。 Attached librarie。
不同液体有不同的汽化潜热；同一液体随其沸点上升气化潜热（）。 增加。 减少。 不变。
You are working on an Oracle Database 10g database. Because of data loss， you decided to perform a Flashback Database operation using the following command： SQL> FLASHBACK DATABASE TO TIMESTAMP（SYSDATE ？5/24）； Which two statements are true？ （） SYSDATE should not be used with TIMESTAMP.。 The database must have multiplexed redo log files.。 The database must be in the MOUNT state to execute the command.。 The database must be opened with the RESETLOGS option after the flashback operation.。 The entire database needs to be restored from the most recent backup before the flashback operation.。
论述往复活塞式压缩机卡住或咬住或撞裂的原因。
You work as a database administrator for Certkiller .com. You are working on Oracle Database 10g. To forward client connections to an instance， the listener must know information such as the name of the instance and where the instance’s ORACLE_HOME is located. How does the listener get this information？（） It gets it from the parameter file.。 The listener prompts for details on startup.。 The listener gathers information from the control file.。 The instance automatically registers with the default listener.。 The listener gets this information through thelistener.orafile.。
If class Donkey2 is invoked twice， the first time without assertions enabled， and the second time with assertions enabled， what are the results？（）
