One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； January 16th
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True or False: Generally, toxic and harmful gases have a density greater than that of air, so they tend to accumulate in lower areas. If it is necessary to enter deep wells containing such gases for work, it is essential to ensure proper ventilation, wear gas masks and safety belts, etc. ( ) Answer: Correct
Correct, you must pass the analysis before entering!