Non-destructive test for damage. People were exposed to radiation. Ray photo detection. Set up safety warning signs; Dust leads to occupational diseases such as dust and lungs. Wear protective gear. Personal injury, environmental pollution. The source of radiation. Do a good job of radiation source protection, storage work. Chemical burns. Wash the photos. Wear protective gear, equipped with emergency kits and necessary medicines. Pollution of the environment. Discarded development fluid. Discarded development fluid signed up for regular recycling, equipped with liquid storage barrels in the darkroom, and the casual dumping of liquid is prohibited.
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