皮皮学，免费搜题
登录
搜题
【单选题】
If you are able to talk to a friend over the telephone, you feel that you are close ____ the actual distance is not shortened. [ ]A.
so long as
B.
if
C.
even if
D.
as
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】通过中心设备实现点到点连接,提供集中式控制的网络拓扑结构是 .
【单选题】Reebok once had to limit the number of its distributors because______.
A.
its supply of products fell short of demand
B.
too many distributors would cut into its profits
C.
the reduction of distributors could increase its service
D.
it wanted to enhance consumer confidence in its products
【简答题】通过中心设备实现点到点连接,提供集中式控制的网络拓扑结构是____。
【简答题】____模拟信号是离散信号,而数字信号是连续信号。