影响知觉选择性的主观因素主要有五个方面： （1）观察者的（）； （2）观察者的兴趣和爱好； （3）观察者的个性特征； （4）观察者的过去经验； （5）观察者的知识结构。 ["需要与动机","能力结构","态度体系","人格特征"]
You realize that the control file is damaged in your production database.After restoring the control file from autobackup, what is the next step that you must do to proceed with the database recovery?（） [" Mount the database"," Open the database in NORMAL mode"," Open the database in RESTRICTED mode"," Open the database with the RESETLOGS optio"]
测绘法》第四十七条，对不按规定汇交测绘成果资料的，责令限期汇交；逾期不汇交的，对测绘项目出资人处多少罚款。（） ["处以重测所需费用一倍以上","处以重测所需费用二倍以下","处以重测所需费用一倍以下","处以重测所需费用一倍以上二倍以下"]
在盛装过易燃易爆物品的容器上，使用（）等工具，也属于动火。 ["电气","焊、割","液压","动力"]
试述农产品市场的特殊性。
宜耕期
