One Question per Day (2016.9.9)
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The last edit to this post was made by 68589544 on 2016-9-11 09:50. 1. The occupational health hazards that welders may be exposed to during their work include ____ A. Harmful gases； B. Radiation ； C dust ； D. Harmful gases, radiation, dust, noise ； 2. For workers engaged in occupational activities, all various hazards that may lead to occupational diseases are collectively referred to as ____ A. Occupational disease hazards ； B. Occupational hazards ； C. Occupational hazard factors ； D. Occupational health hazards. The correct answer is D; A
D C ~~~~~~~~~
1. D. ----2、A