Question

post-test
two-part adhesives:
a. are typically acrylic and polyester.
b. must have a small amount of product purged before mixing.
c. always use mixing tips.
d. are the same as plastic fillers.

Explanation:

To solve this, we analyze each option:

• Option A: Two - part adhesives aren't typically just acrylic and polyester; they have various chemistries.
• Option B: Two - part adhesives (especially those with mixing nozzles or in dual - component systems) often need a small amount purged before mixing to ensure the correct ratio of the two components is mixed (as initial material might be unevenly distributed).
• Option C: Not all two - part adhesives use mixing tips; some can be mixed manually.
• Option D: Two - part adhesives and plastic fillers are different; fillers are for filling, adhesives for bonding.

Answer:

B. Must have a small amount of product purged before mixing.