[单选题]
The molecular mass of nitrogen is 1.boy mwb)u((snc qf9a.vnzk+. m, /eq4 times greater than that of hydrofm:gx ew8q3bh 3 /8crigen. If the molecules in these two gases have the same rms speed, the ratio of hydrogen's absolute temperature h3bemqigx3: 8c/f rw 8to that of nitrogen is .