射频识别(Radio Frequency Identification,RFID)技术的基本原理是磁波理论。
第1题:
If you know that the vessel you are about to call on the VHF radio maintains a radio watch on both the working and the calling frequencies, which frequency should you call on ?______.
A.Calling frequency
B.Distress frequency
C.Urgency frequency
D.Working frequency
第2题:
Bluetooth is a ()technology.
第3题:
射频识别技术的英文全称是Radio Frequency Identification缩写()
第4题:
RFID(Radio Frequency IDentification,无线射频识别器)的两个基本器件是()。
第5题:
After determining that the frequency or channel appears to be no longer in use
After determining that geographic distance from the distress situation will prohibit any other signal from interfering with emergency communications
After the Rescue Coordination Center transmits a message on the frequency or channel being used for emergency communications stating that such traffic has concluded
Routine communications can resume if,in the Master's opinion,communications on that frequency or channel will not interfere with emergency communications
第6题:
对
错
第7题:
第8题:
对
错
第9题:
对
错
第10题:
条码
IC卡
电子标签
非接触卡
第11题:
persistence
pulse repetition rate
pulse length
resolution
第12题:
对
错
第13题:
第14题:
射频识别技术RFID(Radio Frequency Identification)是20世纪90年代开始兴起的一种自动识别技术。
第15题:
射频识别技术(Radio Frequency Identification,RFID)是利用()对记录媒体进行读写的一种识别技术。
第16题:
()即RFID(Radio Frequency IDentification)技术,可通过无线电信号识别特定目标并读写相关数据。
第17题:
Calling frequency
Distress frequency
Urgency frequency
Working frequency
第18题:
阅读器和标签
标签和发射器
阅读器和发射器
阅读器,标签和发射器
第19题:
a commercial ship-to-ship channel
the last frequency that was used
the distress and calling frequency
the radio only if expecting a call
第20题:
电子手铐
射频识别
指纹识别
手机定位
第21题:
对
错
第22题:
By the On Scene Coordinator (OSC)
By the Coast Earth Station (CES) controlling the distress communications on that frequency
It is imposed by the Public Correspondence Station (PCS) controlling the distress communications on that frequency or channel
It is imposed by the High Seas Service (HSS) controlling the distress communications on that frequency or channel
第23题:
射频识别天线
射频识别阅读器
射频识别条码
射频识别标签