【Daily Question】Utilities - Mechanical & Electrical - 20200702
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The situation in which welding operations must be stopped immediately if appropriate protective measures are not taken is ( ). A. The relative humidity of the environment is 80%. B. Arc welding is used, with a wind speed of 6 m/s. C. CO2 gas shielded welding is used, with a wind speed of 2 m/s. D. The weather is extremely hot, with the surface temperature reaching 38°C under sunlight. Answer: C
A. The relative environmental humidity reaches 80%