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在调查的228个典型岗位中,具有噪声危害的岗位为71个,占调查总岗位数的31.1%;其中Ⅰ级有害岗位占噪声有害岗位数的50.8%Ⅱ级占25.3%;Ⅲ级占21.1%;Ⅳ级占2.8%。
Among the 228 typical jobs surveyed, there are 71 jobs with noise hazards, accounting for 31.1% of the total number of jobs investigated. Among them, 50.8% of No. 1 harmful jobs occupy 25.3% of the number of noisy jobs, accounting for 25.3% %; Ⅲ grade accounted for 21.1%; Ⅳ grade accounted for 2.8%.