在通过Console口配置一台Cisco路由器R1时，为了避免路由器显示的信息“打断”正在输入的命令，需要启用显示同步，正确的命令是（ ）。（选择1项） A: R1 B: logging synchronous C: R1 D: config terminal R1（config） E: logging synchronous F: R1 G: config terminal R1（config） H: synchronous I: R1 J: config terminal R1（config） K: line console 0 R1（config-line） L: logging synchronous

The 24 satellites in the Global Positioning System ( GPS ) are synchronous satellites, and they appear to be stationary to an observer on the earth.

Permanent magnet (PM) synchronous motor A: 异步电机 B: 干扰 C: 同步电机 D: 永磁同步电机

通用同步/异步收发器USART （Universal Synchronous / Asynchronous Receive / Transmit）是MSP430单片机的重要（）。

Instant messaging, videoconferencing, and shared screens are all examples of ________ collaboration tools. A: synchronous B: spontaneous C: colocated D: bimodal

The June 7th D-Day attack was simultaneous with heavy bombing of the coastal fortifications. A: synthetic B: drastic C: synchronous D: touching

The no-load character of a 3-phase synchronous generator is the relationship between ( ). A: no-load emf Eo; exciting current If B: output<br/>voltage U; load current I C: output current I; exciting current If D: no-load<br/>emf Eo; load current I

For the of the phase compound excitation type AVR of a self-excited<br/>synchronous generator, the AC side of the rectifier is connected with<br/>capacitors delta connected. The function of these capacitor are ( <br/>). A: resistance-capacitance protection of rectifier B: compensate the generator terminal voltage change caused by the change<br/>of load current C: compensate the generator terminal voltage change due to load current<br/>phase change D: accelerated voltage built-up process

下列关于AJAX的说法正确的是______。 A: AJAX的全称是Synchronous JavaScript and XML B: 使用AJAX技术改善了网页的用户体验 C: 使用AJAX技术不需要服务器端程序的支持 D: 使用AJAX技术可以只改变网页的一部分数据，而不必刷新整个网页