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【多选题】
下列哪些因素与噪音所致危害有关A.
噪音的强度
B.
接触噪音的时间
C.
噪音的频率组成
D.
噪音的加速度
E.
个人防护及个体感受性
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反馈参考答案：
举一反三
【简答题】1603 年,伽利略制成最早的 , 1659 年法国天文学家伊斯梅尔•博里奥 (Ismael Buolliau) 制造了第一支用水银作为测温物质的 。
【单选题】Eastern medicines are becoming more popular in the west, but few people realize how long the two cultures have exchanged ideas. Now an exhibition at the Science Museum in London explores how the two h...
A.
ancient Greek medicine
B.
ancient Indian medicine
C.
Persian medicine
D.
Islamic medicine
【单选题】听力原文：M: Approximately how long does it take for a letter to go by air mail from here to Toronto? W: Three days. An airmail letter from here to Toronto should not take more than three days. Q: Where do...
A.
At the airport.
B.
At the post office.
C.
At the bookstore.
D.
At the travel agency.
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