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Headset stereos can ______. According the experts, when headset sound reaches 110 decibcls, it can be used at most for ______.
Headset stereos can ______. According the experts, when headset sound reaches 110 decibcls, it can be used at most for ______.
admin
2014-02-19
61
问题
Headset stereos can ______.
According the experts, when headset sound reaches 110 decibcls, it can be used at most for ______.
选项
A、one hour
B、half an hour
C、two hours
D、three hours
答案
B
解析
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本试题收录于:
大学英语三级B级题库大学英语三级分类
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大学英语三级B级
大学英语三级
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