【单选题】以下4组用户标识符中,全部合法的一组是( )
【单选题】The amount of fluid delivered by a gear pump can be regulated by _____.
A.
throttling the pressure line
B.
changing the speed of the rotor
D.
None of the above is true
【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.
【单选题】听力原文: Woman: Isn't advertising really a kind of lying? Man: I don't think so. Quite often people do try to get away with those types of things, but the Federal Trade Commission is always very quick to...
A.
Justify the claims they make.
C.
Get away with their products.
D.
Always be honest in the ads.