1.
When cool, thermoplastics :
(a) soften
(b) melt
(c) harden
(d) none of these
Answers
Answered by
1
Answer:
harden
Explanation:
commonsense question
Answered by
0
Answer:
a
Explanation:
Hot thermoplastic is commonly used when marking parking spaces, roads and outdoor sports markings on tarmac. Hot thermoplastic can be used on concrete as long as a primer has been applied, which acts as an adhesive. Cold thermoplastic is used with a draw box for wording, directional arrows and car park bays
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