什么是微软宣称的即插即用（Plug-and-Play，PnP）技术

动态主机配置协议()提供了即插即用连网(plug-and-play networking)的机制。

A. DHCP

B. DNS

C. POP3

Windows10操作系统的特点不包括()。

A、图形界面

B、多任务

C、即插即用(英文为Plug-and-Play，缩写为PnP)

D、卫星通信

听力原文：M: Did you check the power plug and press the play button?

W: Yes, the power indicator was on, and it was running, but somehow the sound didn't come through.

What was the woman probably trying to do?

A．Play a tape recorder.

B．Take a picture.

C．Repair a typewriter.

D．Start a car.

A、即插即用设备就是不需要安装驱动程序。

B、即插即用设备是计算机能够自动识别。

C、即插即用设备是系统能够自动安装驱动程序。

D、PNP是Plug-and-Play（即插即用）的缩写。

Your multitenant container database, CDB1, is running in ARCHIVELOG mode and has two pluggable databases, HR_PDB and ACCOUNTS_PDB. An RMAN backup exists for the database.You issue the command to open ACCOUNTS_PDB and find that the USERDATA.DBF data file for the default permanent tablespace USERDATA belonging to ACCOUNTS_PDB is corrupted.What should you do before executing the commands to restore and recover the data file in ACCOUNTS_PDB?（）

A. Place CDB1 in the mount stage and then the USERDATA tablespace offline in ACCOUNTS_PDb.

B. Place CDB1 in the mount stage and issue the ALTER PLUGGABLE DATABASE accounts_pdb CLOSE IMMEDIATE command.

C. Issue the ALTER PLUGGABLE DATABASE accounts_pdb RESTRICTED command.

D. Take the USERDATA tablespace offline in ACCOUNTS_PDb.

The globe valve has a bulbous body, housing a valve seat and screw down plug or disc arranged at right angles to the axis of the pipeAccording to the above sentence, which of the following statements is not true?

A.The profile of the valve is like a globe

B.The valve seat is set into the bulbous body

C.The plug or disc of the valve is made vertical to the axis of the pipe

D.The valve seat is located at right side of the plug or disc

A. Acrobat会因缺少文件而无法启动

B. Acrobat可正常启动，但功能变少

C. Acrobat可启动，但会提示要求运行“帮助（Help）”菜单下的“检测和修复（DetectandRepair）”命令

D. Acrobat可启动，并会自动重新生成plug_ins文件夹