Select the factor(s) from the list on the right which can be used to measure:

II.C.31.   Rate at which heat is produced in an x-ray tube.

___  ___   ___   ___   ___

    A.   roentgen
    B.   rad
    C.   rem
    D.   gray
    E.   sievert
    F.   coulomb/kg of air
    G.   curie
    H.   becquerel
    I.   roentgen-cm2
    J.   joules
    K.   watts
    L.   watts/cm2
    M.   heat units

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