Agar is so critical that since WWII, scientists have tried to find alternatives in the event of a supply chain breakdown, especially as recent shortages have caused similar alarm. But while other colloid jellies have emerged, agar remains integral to laboratory protocols because no alternatives can yet compete on performance, cost, and ease of use.
Equal (4): Everything in this space must be equal to 4. The answer is 4-5, placed horizontally; 4-4, placed vertically.
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Equal (5): Everything in this purple space must be equal to 5. The answer is 5-5, placed horizontally; 5-6, placed vertically.
2024年12月20日 星期五 新京报