气质类型（） ["有好好坏","都是好的","都是坏的","无好坏之分"]
Your database is running in ARCHIVELOG mode. You are performing a user-managed backup of the DATA1 tablespace. You place the DATA1 tablespace in backup mode by issuing the following statement: ALTER TABLESPACE data1 BEGIN BACKUP; While you are performing the backup, an error occurs that causes the instance to terminate abnormally. Which statement about the DATA1 tablespace is true?（） [" The DATA1 tablespace is automatically taken out of backup mode when the instance aborts."," If you restart the database, the DATA1 tablespace will be automatically taken out of backup mode when the database is opened."," If you restart the database, the DATA1 tablespace will be automatically taken out of backup mode when the database is mounted."," If you restart the database, the database will not be opened."]
一男性患者，30岁，拟行阑尾切除术，术前常规禁食的时间不得少于（） ["4h","14h","6h","12h","8h"]
简述外源化学物对机体毒性作用的分类。
In what view are you likely to see the following output？（） SID SERIAL# EVENT SECONDS_IN_WAIT 121 269 RMAN backup & recovery I/O 2 129 415 SQL*Net message from client 63 130 270 SQL*Net message from client [" V$SESSION_EVENT"," V$SESSION"," V$WAITS"," V$WAITSTAT"," V$SYSSTAT"]
过量空气系数是指（），循环流化床锅炉一般选取（）。
