One question per day; those who answer correctly receive 5 wealth points, and those who participate receive 2 wealth points； Question 298
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Selection: The so-called “trienes, triphenyls, one alkyne, and one naphthalene” are the most fundamental raw materials in organic chemical industry, among which trienes refer to ( ). A. Ethylene, propylene, butylene ； B. Ethylene, propylene, butadiene ； C, ethylene, propylene, pentene ； D. Propylene, butadiene, pentene. B. Ethylene, propylene, butadiene ；
B. Ethylene, propylene, butadiene；
The so-called “three alkenes, three phenyls, one alkynene, and one naphthalene” are the most basic raw materials in organic chemical manufacturing; among them, the three alkenes refer to (B), ethylene, propylene, and butadiene； ).
A. Ethylene, propylene, butylene；
B. Ethylene, propylene, butadiene
A. Ethylene, propylene, butylene；
B. Ethylene, propylene, butadiene；