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| risk of explosion by shock, friction, fire or other sources of ignition | |||
| French thesaurus | |||
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| réaction d'avance | |||
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R2 : 14 phrases in 5 subjects |
| Chemistry | 4 |
| Communications | 4 |
| Information technology | 4 |
| Nuclear physics | 1 |
| Transport | 1 |
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