氮氧化物在环境中被氧化成硝酸,与硫酸一起造成酸雨危害;还是温室气体。
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NO,NO2-进入血液中,与血红蛋白结合成高铁血红蛋白,引起组织缺氧
A. 对
B. 错
在显色吸收液瓶前接一内装三氧化铬—石英砂(氧化剂)管,当用空气采样器采样时,气样中的NO在氧化管内被氧化成NO2和气样中的NO2一起进入吸收瓶,与吸收液发生吸收、显色反应,于波长540—545nm之间处,用标准曲线法进行定量测定,其测定结果为空气中NO和NO2的总浓度CNOx。
A. 对
B. 错
I was thinking about taking photography as a hobby.
A. in
B. with
C. up
D. on
The court was presented withevidence that she'd murdered her husband.
A. comfortable
B. communicated
C. compelling
D. compulsory