Beidou __________(导航卫星系统) is now providing global navigation and positioning services.
举一反三
- Beidou began providing positioning, navigation, timing and messaging services to civilian users in China and other parts of the Asia-Pacific region before December 2012.
- Beidou Satellite Navigation system is a global satellite navigation system developed by China, and it is also the _________ mature satellite navigation system. A: first B: second C: third D: fourth
- Global Positioning System can provide high accuracy ( centimeter-level ) navigation under good weather conditions.
- GNSS：全球卫星导航系统（Global Navigation Satellite System）。能够在全球范围内提供导航定位服务的卫星导航系统的总称。 （ ）
- There<br/>are a number of in-car navigation systems available in ____ form,<br/>the most advanced of which are linked to global positioning<br/>satellites. A: notch B: discord C: prototype