阿摩線上測驗
18. An NMR spectrometer that operates at a frequency of 60 MHz for C NMR spectra, operates at what frequency for H NMR spectra?
(A) 15 MHz
(B) 30 MHz
(C) 60 MHz
(D) 120 MHz
(E) 240 MHz
答案：登入後查看
統計： A(1), B(3), C(3), D(0), E(8) #1121873
統計： A(1), B(3), C(3), D(0), E(8) #1121873
