【单选题】以下4组用户标识符中,全部合法的一组是( )
【简答题】The amount of CO2 produced when the organic carbon in the sample is oxidized by a strong oxidizer and comparing it with the amount in a standard of known TOC.
【单选题】The passage suggests that a large decrease in the amount of CO2 in the atmosphere would result in ______.
A.
at least a slight decrease in global temperatures
B.
at most a slight increase in short wavelength radiation reaching the Earth
C.
a slight long-term increase in global temperatures
D.
a slight short-term increase in global temperatures
【简答题】The amount of CO2 released [ ] has to be reduced by more than 10% to make a difference.