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| 可变存储器; 可修改存储器 | |||
| alterable memory: 25 phrases in 10 subjects |
| Air defense | 1 |
| Aviation | 2 |
| Computers | 2 |
| Earth sciences | 1 |
| Electronics | 8 |
| Information technology | 3 |
| Mathematics | 1 |
| Project management | 1 |
| Space | 4 |
| Telecommunications | 2 |
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