[不定项选择题]上岗证复审，根据上岗证时间，每（）年复审一次。
A.11
B.3
C.4
D.2
E.以上都对

[不定项选择题]上岗证考试包括理论考试和实操考试，满分均为（）分，合格为（）分。
A.120,80
B.120,90
C.100,80
D.100,90
E.以上都对

[不定项选择题]特种作业操作证每（）年复审1次。
A.5
B.4
C.3
D.2
E.以上都对

[不定项选择题]特种作业操作证几年复审1次()。
A.3年
B.5年
C.6年
D.10年
E.以上都对

[不定项选择题]UPS电源后备时间为（）。
A.30Min
B.10Min
C.60Min
D.150Min
E.90Min

[不定项选择题]防寒物资，在防寒过冬期的检查周期为（）一次，其他时间为（）一次。
A.每天、每周
B.每周、每月
C.每天、每月
D.每月、每年
E.以上都对

[不定项选择题]根据所受载荷不同，轴可分为（）三种。
A.直轴
B.心轴
C.曲轴
D.传动轴
E.转轴

[不定项选择题]ATS系统用户登录后可根据需要改变（）。
A.控制方式
B.控制区域
C.用户角色
D.用户权限
E.用户密码

[不定项选择题]ATS系统回放日志最少保存时间为（）。
A.60天
B.180天
C.一年
D.30天
E.60天

[不定项选择题]根据《电客车上下线标准》，以下描述正确的是（）。
A.总风泄漏量，5分钟达到15kPa，不允许出库
B.全列车切除2节车供气塞门，该车必须就近站清客退出服务
C.即使有一台空压机故障，只要风压正常，该列车可以运行至终点站退出服务
D.制动缓解指示灯在牵引位或缓解位没有点亮，此时必须就近站清客退出服务
E.1节车常用制动无法施加，该车必须就近站清客退出服务

[不定项选择题]根据转子的工作转速与临界转速的关系，转子分为（）转子。
A.干扰
B.振动
C.挠性
D.稳定
E.刚性

[不定项选择题]根据焊接过程中金属所处的不同状态，焊接方法可分为（ ）
A.熔焊
B.压力焊
C.摩擦焊
D.钎焊

[不定项选择题]Which statement describes the significance of the CHANGE FAILURE

Command in RMAN? (Choose all that apply.) choose two

A.

It is used to change failure priority only for HIGH or LOW priorities.

B.

It is used to execute the advised repair script.

C.

It is used to change failure priority only for the CRITICAL priority.

D.

It is used to explicitly close the open failures.

E. It is used to inform the database about the repair after the repair script
Executes.

[不定项选择题]The persistent configuration settings for RMAN have default for all

Parameters. 

Identify four RMAN commands that produce a multi-section Backup.

A.

BACKUP TABLESPACE SYSTEM SECTION SIZE 100M;

B.

BACKUP AS COPY TABLESPACE SYSTEM SECTION SIZE 100M;

C.

BACKUP ARCHIVELOG ALL SECTION SIZE 25M;

D.

BACKUP TABLESPACE "TEMP" SECTION SIZE 10M;

E. BACKUP TABLESPACE "UNDO" INCLUDE CURRENT CONTROLFILE SECTION
SIZE 100M;
F. BACKUP SPFILE SECTION SIZE 1M;
G. BACKUP INCREMENTAL LEVEL 0 TABLESPACE SYSAUX SECTION SIZE 100M;

[不定项选择题]凸轮分为（）。
A.盘形凸轮
B.平面凸轮
C.移动凸轮
D.靠模板
E.圆柱凸轮

[不定项选择题]根据人工制冷所能达到的低温不同，制冷技术划分为（）领域。
A.普通制冷
B.深度制冷
C.一般制冷
D.低温制冷
E.超低温制冷

[不定项选择题]列车安全间隔距离信息是根据（）等信息计算出来的。
A.最大允许速度
B.停车点位置
C.线路信息
D.紧制速度
E.以上都对

[不定项选择题]You notice performance degradation in your production Oracle 12c

Database. You want to know what caused this performance difference.

Which method or feature should you use?

A.

Database Replay

B.

Automatic Database Diagnostic Monitor (ADDM) Compare Period report

C.

Active Session History (ASH) report

D.

SQL Performance Analyzer

[不定项选择题]Examine the command for creating pluggable database PDB2 in

Container database CDB2.

Select three options, any one of which is required for it to execute

Successfully. (Choose three.)

A. Add the FILE_NAME_CONVERT clause to the statement and set the
PDB_FILE_NAME_CONVERT
Parameter.
B. Add only the CREATE_FILE_DEST clause to the statement.
C. Set only the PDB_FILE_NAME_CONVERT parameter.
D. Set the PDB_FILE_NAME_CONVERT parameter and enable OMF.
E. Enable only OMF.
F. Add the FILE_NAME_CONVERT clause to the statement and enable Oracle
Managed Files (OMF)

[不定项选择题]choose one
You enable Flashback Data Archive for a table for which you
Want to track and save all transactions for four years. After some time, the
Requirement changes for keeping transactions from four to two years.
You execute the following command to change the requirement:
SQL> ALTER FLASHBACK ARCHIVE fdal MODIFY RETENTION 2 YEAR;
What is the outcome?
A. All historical data older than two years, if any, is purged from the flashback
Archive FDA1.
B. An error is returned because the retention period cannot be reduced.
C. All the flashback data archives are purged and the subsequently created
Flashback archives are maintained for two years.
D. All historical data older than two years, if any, is archived to flashback logs and
The flashback archive is set to new retention time.