皮皮学，免费搜题
登录
搜题
【判断题】
可燃气体进入探测室后，部分红外线的波长将被可燃气吸收从而改变频率，红外线被吸收的量与可燃气的浓度成一定关系、经过了探测室的红外线被分成对等的两部分分别进入两个滤光镜光镜，其中一个滤光镜只允许通过原始发射频率的红外线，另一个滤光镜只允许通过被可燃气改变了频率的红外线，这两部分光线分别由两个红外线探测器测量强度再进行对比即可由微处理器计算出可燃气的浓度A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】what is the historical remaining issue that became the original sin of the united states?
A.
the issue of representation in congress
B.
slavery
C.
fortifying the congress
D.
separation of power
【单选题】what is the historical remaining issue of the constitution that became the original sin of the united states?
A.
slavery
B.
the issue of representation in congress
C.
fortifying the congress
D.
separation of power
【单选题】what is the original sin of the united states?
A.
the issue of representation in congress
B.
slavery
C.
fortifying the congress
D.
separation of power
相关题目：