建筑照明设计选取照度标准值时，哪些情况下可以提高一级标准？（

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问题单项选择题

建筑照明设计选取照度标准值时，哪些情况下可以提高一级标准？（）

A.识别对象的亮度对比很小（小于0.3）时

B.很短时间的作业

C.作业精度或速度无关紧要

D.建筑等级和功能要求较低时

答案

参考答案：A

填空题

根据所给首字母填空。

My brother e 1 for half an hour every day. He s 2 for ten hours every night. He w 3 TV for

about an hour every day. He s 4 eats cakes, sweets and meat. He often e 5 fruit and v 6 . He

often w 7 to school. He h 8 lunch at school. After lunch, he s 9 for half an hour. Then he goes

on to study. He goes h 10 at five in the afternoon.

判断题

在工作场所等电位连接要比保护接地效果还好。