每个天线有三部份组成。 A: Each antenna has three parts. B: Each antenna comprises three parts. C: Each antenna consists of three parts.
每个天线有三部份组成。 A: Each antenna has three parts. B: Each antenna comprises three parts. C: Each antenna consists of three parts.
Mobile phone contains a brain, a heart, an antenna, a LCD, a keyboard, a microphone, a speaker and a battery.
Mobile phone contains a brain, a heart, an antenna, a LCD, a keyboard, a microphone, a speaker and a battery.
Which part of radar can protect receiver? A: trigger generator B: duplexer C: transmitter D: antenna
Which part of radar can protect receiver? A: trigger generator B: duplexer C: transmitter D: antenna
词汇与结构 Each ILS antenna ____ a narrow beam, one slightly to the left of the runway centerline, the other to the right.
词汇与结构 Each ILS antenna ____ a narrow beam, one slightly to the left of the runway centerline, the other to the right.
下列英语单词中属于存储意思的是（）。 A: Stands B: Antenna C: Select D: Store
下列英语单词中属于存储意思的是（）。 A: Stands B: Antenna C: Select D: Store
Simulation and experimental studies _____, which show that the axial ratio bandwidth of the antenna is directly proportional to the thickness of the substrate.? have been performed|;is performed;;|was performed;;|were performed;
Simulation and experimental studies _____, which show that the axial ratio bandwidth of the antenna is directly proportional to the thickness of the substrate.? have been performed|;is performed;;|was performed;;|were performed;
Which of the following is NOT true of a laser system A: It is able to make its way through water. B: It is able to communicate with submarines at work. C: Its beam reaches a submerged submarine with the help of an antenna. D: It is able to carry more data than low frequency waves.
Which of the following is NOT true of a laser system A: It is able to make its way through water. B: It is able to communicate with submarines at work. C: Its beam reaches a submerged submarine with the help of an antenna. D: It is able to carry more data than low frequency waves.
智慧职教: 天线（Antenna）：是一种以[填空(1)] 形式把无线电收发机的射频信号功率接收或辐射出去的装置，在标签和读取器间传递射频信号。
智慧职教: 天线（Antenna）：是一种以[填空(1)] 形式把无线电收发机的射频信号功率接收或辐射出去的装置，在标签和读取器间传递射频信号。
智慧职教: [填空(1)] 用于接收主机（Host）端的命令，对于储存在感应器的数据则将其以有线或无线方式传送回主机，它内含Controller（控制器）及Antenna（天线），如果读取距离较长，则天线会单独存在。
智慧职教: [填空(1)] 用于接收主机（Host）端的命令，对于储存在感应器的数据则将其以有线或无线方式传送回主机，它内含Controller（控制器）及Antenna（天线），如果读取距离较长，则天线会单独存在。
Which one is not mentioned in the video A: In AM, carrier wave results in the height or amplitude changing. B: Lower frequency signals would require a much larger size of antenna at the receiving end. C: FM is less susceptible to interference and FM also has the advantage of having much higher bandwidth. D: How many turns of the wire will determine what frequency you are picking.
Which one is not mentioned in the video A: In AM, carrier wave results in the height or amplitude changing. B: Lower frequency signals would require a much larger size of antenna at the receiving end. C: FM is less susceptible to interference and FM also has the advantage of having much higher bandwidth. D: How many turns of the wire will determine what frequency you are picking.