Which are correct comparisons between welded joints and mechanical couplings? Select all that apply.

A) Mechanical couplings can offer flexibility for thermal expansions.
B) Mechanical couplings are more expensive to install.
C) Mechanical couplings are stronger and less prone to leakage.


A) Mechanical couplings can offer flexibility for thermal expansions.

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What will be an ideal response?

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What material, used in friction linings, may cause lung damage with repeated exposure?

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