instruction:
Translate the given Spanish text to English
question:
Said length is not required outside the nose, however said dead space is necessary to locate the probe, thereby being essential.
answer:
Con un segmento de 80 cm en su porcion proximal que se desenrosca al final del procedimiento y que se desecha.


question:
The silica-alumina may be amorphous but preferably is crystalline zeolite.
answer:
El silice-alumina puede ser amorfo pero de preferencia es zeolita cristalina.


question:
A switching system is provided.
answer:

Se proporciona un sistema de conmutación.