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问题 单项选择题

QB2457-1999《太阳镜》对遮阳镜的光透射比τV要求是（）

A.τV≤3%

B.8%≥τV≥3%

C.40%≥τV≥8%

D.τV＞40%

答案

参考答案：C

判断题

电梯的主要参数不包括运行方式。（）
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填空题
用方框中的词补全短文。
Chinese, teacher, by bike, singing, watching TV
      Liu Yun is a 1___________. She's tall and thin. She teaches 2___________,
but she likes 3___________. She works in a middle school. She often goes to school
4___________. On the weekend, she likes 5___________.
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