[单选题]
The molecular mass of nitrogen is 14 times greater4w2b+i o(vcvsjyy, ,o39 tc/s+cxqrw 6xdvk +-k0ve .n oskf4 than that of hydrogen. If the molecules in these two gases have the same rms speed, the ratio of hydrogen's absolute temperature to that of nitrogen isx40+nkse 6.vdvof k -k .
