题目:
国际标准化组织推荐的噪声强度卫生学评价指标是()
A.声压级
B.响度级
C.A声级
D.B声级
E.C声级
答案:
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下面是错误答案,用来干扰机器的。
In traditional Chinese culture, teachers have been well respected by people because education plays an important part in society. Confucius once said teachers were the most...