You enabled the flashback logging feature， but you have not specified the location of the flash recovery area. Which location would be used as the default location for the flash recovery area？（） [" The location used for control files."," The location used for redo log files."," The location set by using $ORACLE_BASE"," The location set by using $ORACLE_HOME"," The location set by using CORE_DUMP_DEST"," The location set by using BACKGROUND_DUMP_DEST"]
纯比例调节用于工艺系统（）调节。 ["液位","压力","流量"]
幼儿上课时不专心的行为属于（） ["不是问题的行为","轻微的问题","范围和影响有限的问题行为","问题扩散或扩大"]
人际智能具体地说是指一个人与他人良好相处、有效调节关系、协同工作、发挥人际效能的能力。（）
Which code fragment， inserted at line 24， outputs "123abc 123abc"？（） ["sb1.append（"abc"）； s1.append（"abc"）；","sb1.append（"abc"）； s1.concat（"abc"）；","sb1.concat（"abc"）； s1.append（"abc"）；","sb1.concat（"abc"）； s1.concat（"abc"）；","sb1.append（"abc"）； s1=s1.concat（"abc"）；","sb1.concat（"abc"）； s1=s1.concat（"abc"）；"]
贡献原则
