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1. |
Which of the following is the operating frequency of the ESR spectrometer? |
A. | 1.7 to 3.4 GHz |
B. | 1.5 to 4.2 GHz |
C. | 3.2 to 5.4 GHz |
D. | 8.8 to 9.6 GHz |
Answer» E. | |