|
Pregunta
|
Respuesta correcta
|
Of what material are made plastics? :
|
polynomers |
Depending on the origin, we can describe plastics as... :
|
natural or synthetic |
How can we classificate plastics? :
|
thermoplastics, thermoset and elastomers |
|
Pregunta
|
Respuesta correcta
|
Which is NOT a formation technique? :
|
Extorsion |
Some stone binders are... :
|
plaster, cement and mortar |
Glass is... :
|
waterproof, fragile and hard |
What is ductility? :
|
ability to be stretched into wires |
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