【单选题】RFID(Radio Frequency Identification)技术,又称( ),是一种通信技术,
【简答题】Who can help you if your hard disk crashes?
【单选题】关于感应电动势的正确说法是:
A.
将导体回路改为绝缘体环,通过环的磁通量发生变化时,环中会产生感应电动势.
B.
导体回路中的感应电动势的大小与穿过回路的磁感应通量成正比.
C.
当导体回路所构成的平面与磁场垂直时,平移导体回路不会产生感应电动势.
D.
只要导体回路所在处的磁场发生变化,回路中一定产生感应电动势.
【简答题】USB flash disk U盘 (Universal Serial Bus)
【判断题】A USB (flash) disk is the only type of removable storage media.
【简答题】下列关系式中不正确的是 ( ) A . 0 Î Æ B . 1 Ï {2 , 4} C . -1 Î { x | x 2 -1=0} D . 2 Î { x | x >0}A. A.0ÎÆ
【单选题】“题好一半文”,选择题目不需要符合的要求是( )。
【单选题】RFID技术,又称电子标签、无线射频识别,是一种通信技术,可通过( )识别特定目标并读写相关数据。
【单选题】You have a computer that runs Windows 7 Professional. A USB disk is attached to the computer. You needto ensure that you can enable BitLocker To Go on the USB disk. What should you do?()
A.
Enable Encrypting File System (EFS).
B.
Upgrade the computer to Windows 7 Enterprise.
C.
Initialize the Trusted Platform Module (TPM) hardware.
D.
Obtain a client certificate from an enterprise certification authority (CA).