更多"[单选题] Constant communication of imp"的相关试题:
[单选题]Social communication is to learn than technology.
A.easy
B. easier
C. easiest
D. more easy
[单选题]以下哪个专业术语是“dielectric constant”的中文解释。（ ）
A.介电损耗
B.介电常数
C.柔顺性
D.熔限
[单选题]Social communication is ( ) to learn than technology.
A.easy
B.easier
C.easiest
D.more easy
[单选题]
Refer to the exhibit. In the communication between host 1. and host 2. over the point-to-point WAN, which
Protocol or technology is represented by dashed line A?
A. IP
B. T1.
C. PPP
D. IEEE 802..3.
[单选题]27. Communication is one of the most important _____ that hold cultural systems together.
A.sources
B.links
C.qualities
D.obligations
[单选题]1. The base features of the communication process are identical in one question :Who says ____thought what channel to whom?
A.how
B.when
C.what
D.such
[多选题]无线通信(Wireless communication)是利用电磁波信号可以在自由空间中传播的特性进行信息交换的一种通信方式。以下有关无线传播说法正确的是
A.频率越高，传播损耗越小，覆盖距离越远，绕射能力越强
B.低频段频率资源紧张，系统容量有限，主要应用于广播、电视、寻呼等系统
C.频率越低，传播损耗越大，覆盖距离越近，绕射能力越弱
D.无线电波在空间传播时，其电场方向是按一定的规律而变化的，这种现象称为无线电波的极化
