光电式火焰探测器,主要探测火焰发出的( )。A.可见光 B.蓝光波 C.紫外或红外 发布时间:2017-06-23 04:30 │ 来源:www.tikuol.com 题型:单项选择题 问题: 光电式火焰探测器,主要探测火焰发出的( )。A.可见光B.蓝光波C.紫外或红外光D.按红、橙、黄、绿、蓝、靛、紫次序连续分布的彩色光谱
题型:单项选择题 —Who is the volunteer for Exp0 2010 Shanghai China? —I think it __ __ your sister. Because she likes volunteering. [ ]A. can't be B. must be C. wouldn't be 查看答案