You executed the following command: RMAN> RECOVER COPY OF DATAFILE '/u01/app/oracle/oradata/orcl/users01.dbf'; Which statement regarding the above command is correct?（） [" The '\/u01\/app\/oracle\/oradata\/orcl\/users01.dbf' data file is recovered from the image copy"," The '\/u01\/app\/oracle\/oradata\/orcl\/users01.dbf' data file is recovered from the last incremental backup"," Image copies of the '\/u01\/app\/oracle\/oradata\/orcl\/users01.dbf' data file are updated with all changes up to incremental backup SCN. '\/ u01\/app\/oracle\/oradata\/orcl\/users01.dbf"," Image copies of the '\/u01\/app\/oracle\/oradata\/orcl\/users01.dbf' data file are recovered using the above command if data file recovery fail"]
教师、校长的专业学习是嵌入到学校每天（）里去的。
对混凝土构件耐久性影响较大的因素有（）。 ["结构形式","环境类别","混凝土强度等级","混凝土保护层厚度","钢筋数量"]
公称容积40L的气瓶，单环宽度为（）mm，双环的各环宽度为（）mm。 ["30、30","40、30","40、40"]
tommy has created a sales view in his sales.nsf database. Tommy wants negative numbers in the sales number column in the view parenthesis. which one of the following should tommy do?（） ["select the parenthesis when negative value in the view properties box ","select the parenthesis when negative value in the column properties box ","use the @function @negative to set this in the column formula in the view ","use a formula to format the value in the field on the form that will be displaying in the view"]
自动润滑系统堵塞排除措施
