Question

fff: types of support
use the information below to answer the question.
there are two types of support structures with fused filament fabrication (fff):
dissolvable and standard.
dissolvable
dissolvable support is available if the user has a dual spool fff machine, or when they
upload the file. dissolvable filament is used with the main filament to create the fff
design without any detrimental effect on the surface design.
pva is a water - soluble support material that goes well with pla. abs and nylon require
a chemical and alcohol to dissolve, so it is better to avoid this unless there is a specific
strength issue needed.
standard
with the standard structure, the support material is made out of the same build
material. there are two options available: tree structure or accordion.
tree structure has minimal impact on the surface. it is also good for minimizing post -
processing.
accordion structure is the default. it can be influenced through the slicer to get it
down to the minimum support needed. this helps to reduce the impact. if the surface
condition is not a concern, the program - generated accordion support structure can be
used.
what are the two types of support structures available for
fused filament fabrication (fff)?
interior and exterior
attached and bridged
dissolvable and standard
castable and mechanical

Explanation:

The text explicitly states that there are two types of support structures for FFF: dissolvable and standard.

Answer:

dissolvable and standard