一、管制區:指噪音管制區劃定作業準則規定之第一類至第四類噪音管制區。 二、音量:以分貝(dB(A ))為單位,括號中 A 指在噪音計上 A 權位置之測量值。
1991 (MCMXCI) was a common year starting on Tuesday of the Gregorian calendar, the 1991st year of the Common Era (CE) and Anno Domini (AD) designations, the 991st year of the 2nd millennium, the 91st year of the 20th century, and the 2nd year of the 1990s decade. It was the final year of the Cold War, which had begun in 1947. During the year…
跳蚤是小型昆蟲,雖然體型很小,但可能引起人體皮膚的刺癢和紅腫,並引發皮膚過敏反應,以及傳染多種疾病,例如:地方性斑疹傷寒、鼠疫等。 跳蚤進入家裡的途徑, 通常是寵物在外面接觸到跳蚤,將牠們帶進來,或是外出接觸到有跳。
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脸部的痣代表什么 - 住宅噪音管制分貝 -