A class games.cards.Poker is correctly defined in the jar file Poker.jar. A user wants to execute the main method of Poker on a UNIX system using the command：java games.cards. Poker What allows the user to do this？（） put Poker.jar in directory /stuff/java， and set the CLASSPATH to include /stuff/java。 put Poker.jar in directory /stuff/java， and set the CLASSPATH to include /stuff/java/*.jar。 put Poker.jar in directory /stuff/java， and set the CLASSPATH to include /stuff/java/Poker.jar。 put Poker.jar in directory /stuff/java/games/cards， and set the CLASSPATH to include /stuff/java。
根据马斯洛的需要层次理论和现代动机心理学的研究，儿童第三层次的需要即社会性与自我发展的需要，这一层次需要包括（） 身体活动的需要、基本生存的需要和安全的需要。 理解环境的需要和影响环境的需要。 社会性交往的需要、自我实现的需要和尊敬（认可）的需要。 最佳觉醒水平的需要和探究的需要。
You want to analyze a SQL Tuning Set （STS） using SQL Performance Analyzer in a test database. Which two statements are true regarding the activities performed during the test execution of SQLs in a SQL Tuning Set？（） Every SQL statement in the STS is considered only once for execution.。 The SQL statements in the STS are executed concurrently to produce the execution plan and execution statistics.。 The execution plan and execution statistics are computed for each SQL statement in the STS. 。 The effects of DDL and DML are considered to produce the execution plan and execution statistics.。
简论教育社会学研究的客观性。
In which scenario will you perform an incomplete recovery？（） when a table is dropped and stored in the Recycle Bin。 when all the control files are deleted。 when a member of a multiplexed redo log group is dropped。 when you are required to recover a table to its previous state。
不得从事液化石油气充装的人员是（）。
