外资企业将其财产或者权益对外抵押、转让,须经审批机关批准,并向工商行政管理机关办理变更登记手续。()
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Which of the following represents the correct way to perform an online recovery of datafile 4, which is assigned to a tablespace called USERS?()
A. shutdown restore datafile 4; recover datafile 4; alter database open;
B. Sql alter database datafile 4 offline; restore datafile 4; recover datafile 4; alter database open;
C. Sql alter database datafile 4 offline; restore datafile 4; Sql alter database datafile 4 online;
D. Sql alter database datafile 4 offline; restore database datafile 4; recover database datafile 4;Sql alter database datafile 4 online;
E. Sql alter database datafile 4 offline; restore datafile 4; recover datafile 4; Sql alter database datafile 4 online;
铁路局应定期组织有关部门检查客车防火工作,消除火灾隐患,确保客车安全。车辆段要加强燃煤锅炉、茶炉、()、电器设备及发电车的检修。
有一台锅炉在酸洗过程中,取100g酸洗溶液样,经化验盐酸的含量为6.5g,半个小时后,取100g酸洗溶液样,盐酸的含量在多少范围内,即可认为反应结束?(两次化验酸液中盐酸的质量分数差应小于0.2%)