You run a script that completes successfully using SQL*Plus that performs these actions: 1. Creates a multitenant container database (CDB) 2. Plugs in three pluggable databases (PDBs) 3. Shuts down the CDB instance 4. Starts up the CDB instance using STARTUP OPEN READ WRITE Which two statements are true about the outcome after running the script?（）

A

The seed will be in mount state.

B

The seed will be opened read-only.

C

The seed will be opened read/write.

D

The other PDBs will be in mount state.

E

The other PDBs will be opened read-only.

F

The PDBs will be opened read/write.

In your production database， you have observed that the database server performance degrades whenever there is a switch between the log groups. On further investigation， you find that the database is running in ARCHIVELOG mode and the archived log files are being written to the same disk that is used to store the redo log members.  Which two actions would you take to improve the performance of the database server？ （）

increase the size of the redo log buffer

increase the number of redo log groups

increase the number of log writer processes

increase the number of ARCn processes

change the appropriate LOG_ARCHIVE_DEST_n parameter to place the archived log files in a separate location

View the Exhibit and examine the properties of the USERS tablespace.     You execute the following statement to shrink the TRANS table existing on the USERS tablespace：  SQL> ALTER TABLE trans SHRINK SPACE CASCADE；  Which objects would be affected by this command？（）

the TRANS table

the B*Tree indexes on the TRANS table

the materialized views log of the TRANS table

the materialized views based on the TRANS table

the large object （LOB） segments of the TRANS table

Photoshop通道的说法正确的是（）。

A、保存颜色信息

B、保存选区信息

C、对通道中的层能使用滤镜

D、通道中的对象可以复制和粘贴

对口服敌百虫中毒的患者，处理不正确的是（）

A、用清水洗胃

B、用生理盐水洗胃

C、服用阿托品

D、每次注入洗液量200～250ml

E、用碳酸氢钠洗胃

经典的古希腊柱式共有三种，它们分别是（）它们并称为“希腊三柱式”。

A、多利克式

B、爱奥尼亚式

C、围柱式

D、科林斯式