患者,男性,30岁。学习游泳不慎误人深水区溺水,经抢救出水,发现心跳、呼吸已停。现场首先的处理是()
A. 送往医院
B. 拨打急救电话
C. 清理呼吸道积水
D. 口对口人工呼吸
E. 胸外心脏按压
查看答案
标准煤的发热量为()。
A. 20934KJ
B. 25120.8KJ
C. 29307.6KJ
On Friday at 11:30 am you decided to flash back the database because of a user error that occurred at 8:30am. Which option must you use to check whether a flashback operation can recover the database to the specified time?()
A. Check the alert log file
B. Query the V$FLASHBACK_DATABASE_LOG view
C. Query the V$RECOVERY_FILE_DEST_SIZE view
D. Query the V$FLASHBACK_DATABASE_STAT view
E. Check the value assigned for the UNDO_RETENTION parameter