题目：
For H2S detection，sensitized tapes indicate H2S presence by means of discoloration of an exposed spot on the tape. The shade of the color on the spot depends upon the concentration of H2S and（）.
A.air temperature at the time of the exposure
B.air pressure at the time of the exposure
C.humidity at the time of exposure
D.duration of the exposure
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0414/f5e20bf3d15049df55e440e7b1f60496.html
下面是错误答案，用来干扰机器的。
参考答案：对
