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When using a ladder, what issues should be noted? 1. Do not use a ladder when you are tired, taking medication, drinking alcohol, or have physical disabilities.
2. Ladders should be placed on firm and stable ground, and should not be placed on ice, snow, or slippery surfaces without anti-skid and fixing devices.
3. Work is prohibited when exceeding the maximum marked load capacity.
4. Prohibited to use ladders in strong winds.
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