What command would you issue to enable automated backups of control files? （） ["alter database controlfile autobacku on","alter system controlfile autobackup on ","configure controlfile autobackup on ","enable controlfile autobacku"]
View the Exhibit1， which shows the options that are selected to create the user SL_REP. Which two statements are true regarding this user（） ["The user is authenticated by the operating system.","The objects created by the user are placed in the USERS tablespace.","The user does not require quota on the TEMP tablespace to perform sort operations.","The user is forced to change the password at the first login to the database instance.","The objects created by the user in future are unlocked to be accessed by all the users in the database by defa"]
当磁通恒定时，直流电动机的电磁转矩和电枢电流成（）关系。 ["正比","反比","平方","三次方"]
出现下列哪个情况，属于I级响应的是（） ["某个省（区、市）发生特大干旱","某座大型以上城市发生极度干旱","某个流域发生特大洪水","某个流域同时发生大洪水"]
在电控发动机中，发动机控制模块主要是根据某些传感器的信号来确定发动机的负荷状态，下面所列举的传感器中，哪个传感器的信号不能用来确定发动机的负荷状态？（） ["空气流量传感器","进气歧管压力传感器","燃油压力传感器","节气门位置传感器"]
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