One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 439
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Multiple-choice question: In the chemical production process, as seasons change, the lubricant applied to the equipment ( ) changes. A Not required B Not necessarily C No specification D Required Answer: D Required
D. The temperatures in summer and winter are different, resulting in varying viscosities of the lubricating oil
A: There’s heating in winter, so it shouldn’t be necessary, right?
In the chemical production process, as the seasons change, the lubricating oil (D) applied to the equipment changes. A Not required B Not necessarily C No specification D Required
In the chemical production process, as the seasons change, the lubricating oil (D) applied to the equipment changes. A Not required B Not necessarily C No specification D Required