【单选题】You'd better take the map with you __ you won't get lost,
【多选题】局域网的特点:
A.
局域网具有较高的数据传输速率,一般为10Mbps以上,光纤局域网可以达到1000Mbps。
B.
局域网具有较好的传输质量,误码率通常在10-7至10-12之间。
C.
局域网可以支持多种传输介质,例如同轴电缆、双绞线和光纤等。
D.
局域网能够支持简单的点对点通信或多点通信,允许低速或高速的外部设备或者不同型号和不同厂家的计算机接入到网络中。
E.
需要发出何种控制信息,完成何种动作以及做出何种应答。
F.
在局域网中,通信处理功能一般都被固化在一块称为网络适配器LNA(Local Network Adapter)的电路板(网卡)上。
【简答题】If you ____ do as I tell you , you ____ go to the party . A.can ; shan''t B.wil l; won''t C.won''t ; shall D.won''t ; shan''t
【单选题】Sarah, hurry up or you won’t have time to ______ before the party.
【单选题】— Be sure to get there on time, _____ you? — Of course, we _____.
【单选题】You won’t feel happy at school _________ you get on well with your classmates.
【单选题】'To get cash out in the 21st century, you won't need a bank card or a PIN and you even won't have to move a finger. You will simply have to look the cash machine straight in the eye,' declares Nationa...
【单选题】You won't get a loan ________ you can offer some security.
【单选题】Get up early, _______ you won’t miss the bus.