 |
| |||
| σήμα αναφοράς | |||
|
signal de référence : 10 phrases in 4 subjects |
| Communications | 2 |
| Electronics | 6 |
| Finances | 1 |
| Technology | 1 |
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Add | The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Report an error
| Get short URL | Language Selection Tips