HCBBS Forum (English)
Submit Chemical Projects / Find Solutions
Amplify Your Requirements on a Broader Chemical Platform *Engineering · Technology · Equipment · Solutions*
Submit Request

【Daily Question】Utilities - Mechanical & Electrical - 20200402

2020-04-02View Original

Thread Content

The carrier waves used in electromagnetic wave rangefinders do not include ( ). A. Ultrasonic waves B. Electromagnetic microwaves C. Lasers D. Infrared light 【Answer】A 【Explanation】This question tests knowledge of other measuring instruments. Electromagnetic wave rangefinders can be classified according to the carrier they use: microwave rangefinders that use radio waves in the microwave spectrum as their carrier ; Laser rangefinder using a laser as the carrier wave ; An infrared rangefinder that uses infrared light as the carrier wave.

Submit a Project

**Looking for Chemical Technology, Equipment & Solutions?** No Registration Required Broader Platform Exposure | Global Chemical Service Provider Connections

Submit Request — Free Consultation

Disclaimer

This is an automated machine translation of the original thread. Some technical terms may have inaccuracies; the original text shall prevail. Click "View Original" at the top right to access the source page, which supports IP-based automatic real-time language translation. Please watch out for contact details and sales inducements to prevent fraud. All content and translations are for reference only, representing solely the poster's personal views. For enquiries, email service@hcbbs.com.