One question per day; those who answer correctly receive 5 wealth points, and those who participate receive 2 wealth points； Question 260

2016-03-08View Original

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Selection: Branching polymers with a low degree of cross-linking can in an appropriate solvent ( ) A. swell and dissolve B. swell but not dissolve C. soften and melt D. not soften B, swell but not dissolve

Reply #22016-03-08

B. Swells but does not dissolve~~~~~~~~~~

Reply #32016-03-08

Branching polymers with a low degree of cross-linking can in appropriate solvents (B) A. swell and dissolve B. swell but not dissolve C. soften and melt D. not soften

Reply #42016-03-08

Branching polymers with a low degree of cross-linking can in appropriate solvents (B) A. swell and dissolve B. swell but not dissolve C. soften and melt D. not soften

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One question per day; those who answer correctly receive 5 wealth points, and those who participate receive 2 wealth points； Question 260

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