阿摩線上測驗
41. Which of the following molecular changes is necessary for mass spectrometry to occur?
(A) excitation of an electron from the ground state to higher energy state
(B) change of alignment of an electron in a magnetic field
(C) change of alignment of a proton in a magnetic field
(D) loss of an electron
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統計： A(1), B(0), C(0), D(0), E(0) #4042022
統計： A(1), B(0), C(0), D(0), E(0) #4042022
