Question

post-test
besides the iso codes, what other method can be used to identify a part plastic type?
a. refer to another part of the same size.
b. refer to the service information for that vehicle.
c. refer to the owner’s manual.
d. test its flexibility or rigidity against a similar type of plastic.

Explanation:

To identify a plastic part type (besides ISO codes), testing flexibility/rigidity against a similar plastic (Option D) is a practical method. Other options: A (same - size part doesn't indicate plastic type), B (vehicle service info is for vehicle - specific service, not plastic type ID), C (owner’s manual focuses on vehicle operation, not plastic type ID).

Answer:

D. Test its flexibility or rigidity against a similar type of plastic.