Which statement about recovering from the loss of a redo log group is true？（） If the lost redo log group is ACTIVE， you should first attempt to clear the log file.。 If the lost redo log group is CURRENT， you must clear the log file.。 If the lost redo log group is ACTIVE， you must restore，perform cancel-based incomplete recovery，and open the database using the RESETLOGS option.。 If the lost redo log group is CURRENT， you must restore，perform cancel-based incomplete recovery，and open the database using the RESETLOGS option.。
You have a disk group， DGROUP1， with three disk and NORMAL redundancy. You execute the following command to create a template for the disk group： ALTER DISKGROUP dgroup1 ADD TEMPLATE my_temp ATTRIBUTES （MIRROR FINE）；Which statement is true？（） When a file is created in DGROUP1 with the template， it would have three-way mirroring.。 When a file is created in DGROUP1， the MY_TEMP template becomes the default template.。 When a file is created in DGROUP1 with the template， it would have two-way mirroring and file striping.。 When a file is created in DGROUP1 with the template， it would have three-way mirroring and file striping.。 When a file is created in DGROUP1 with the template， it would have two-way mirroring but no file striping.。
婴幼儿反复地拍击盆子里的水，或摇晃哗嘟棒，或绕着房间四周跑，或把悬挂着的玩具一会儿拉拉一会儿丢开，这种游戏称为（） 感觉运动游戏。 象征性游戏。 结构性游戏。 规则游戏。
毒物对人体的危害主要表现哪些方面？
Given: What is the result when method testIfA is invoked？（） True。 Not true。 An exception is thrown at runtime.。 Compilation fails because of an error at line 12.。 Compilation fails because of an error at line 19.。
史书记载：“水激轮转，众筒兜水，次第下倾于岸上……以灌稻田，日夜不息，绝胜人力。”这种提水灌溉工具最早出现于（）。
