Which part of radar can protect receiver?
A: trigger generator
B: duplexer
C: transmitter
D: antenna
A: trigger generator
B: duplexer
C: transmitter
D: antenna
举一反三
- Unit Check 11 短听力选择 -5听一遍，选择正确答案 A: Receiver failure B: Radio failure C: Transmitter failure D: Radar failure
- What can reflect part to part transfer development ? (). A: A system combined GPS and inertial navigation has been sold on the<br/>market. B: A system of cameras and radar sensors has been sold on the market.<br/>C<br/>.We<br/>have bought radar from radar manufacturers. C: We<br/>used to buy our own components
- The air control system is based on radar, which means fewer planes can take to the skies.
- NAVTEX is a simple, cheap, automated receiver which can be mounted_______________. A: on the bridge B: on the deck C: in the holds D: in the engine room
- The intracellular small molecules which can transmit extracellular signal is called ( ) A: first messenger B: carrier C: second messenger D: transmitter E: third messenger