 |
| |||
| clear forward signal | |||
| clear-forward signal | |||
| disconnect signal | |||
|
signal de fin : 44 phrases in 13 subjects |
| Automatic control | 1 |
| Communications | 10 |
| Computers | 1 |
| Electronics | 6 |
| Information technology | 8 |
| Law | 3 |
| Municipal planning | 1 |
| Rail transport | 3 |
| Technology | 1 |
| Telecommunications | 4 |
| Telegraphy | 3 |
| Transport | 1 |
| Video recording | 2 |
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