夏天原料气中含水量和冬天原料中含水量比较结果为（）（进料压力未变） ["夏天低天冬天","两种工况一样","夏天高于冬天"]
You want to implement a master-detail relation between data blocks based on object tables. How would you do this? （） ["Create the relation manually and coordinate the blocks using triggers. ","Base the relation on a REF pointer using the Data Block Wizard. ","Base the relation on a foreign key using the Data Block Wizard. ","This task is not possible because master-detail relations can be implemented only for blocks based on relation tables."]
2002年新成立一企业，其符合一般纳税人条件的企业，应在（）申请办理一般纳税人认定手续。 ["办理税务登记的同时","发生首笔增值税业务时","开业6个月之内","次年1月底前"]
In the parameter file of your production database， the CONTROL_FILE_RECORD_KEEP_TIME parameter is set to 31. What would be the impact of this setting on the backup that is being performed by using Recovery Manager （RMAN）？（） [" The backup would be retained on the media for 31 days."," The backup would be maintained in the recovery catalog for 31 days."," The backup metadata would be retained in the control file for 31 days."," The backup metadata would be maintained in the recovery catalog for 31 days."," Automatic backups of the control file will be retained in the flash recovery area for 31 days."]
地网接地体之间的连接，应采用电焊或气焊连接，不宜采用螺钉连接或铆接；无法使用电焊或氧焊的，建议使用（）焊接。 ["电焊","气焊","氧焊","热熔"]
《包氏父子》逼真地描绘了可悲的父亲老包和可笑的儿子小包，而且还通过这对父子的矛盾，表现了社会的变化，是（）小说创作的代表作之一。
