人防工程中火灾疏散照明的最低照度值不应低于（）。
A．0．501x
B．11x
C．51x
D．正常照明的照度
参考答案：C
It is in their ability to speak ______ humans ______ from animals. [ ]
A. which; differ
B. that; different
C. that; differ
D. which; different
3用于油品计量的温度测量，应使用最小分度值为0.3℃的温度计。
