正电子发射断层扫描
A: proton emission tomography
B: positron emission geography
C: positron emission tomography
A: proton emission tomography
B: positron emission geography
C: positron emission tomography
举一反三
- Which imaging method should be used when we want to observe overall brain activity? A: Magnetoencephalography (MEG) B: Positron emission tomography (PET) C: Electroencephalography (EEG) D: Magnetic Resonance Imaging (MRI)
- carbon emission
- In this research at Columbia University, Charles Townes worked with ______. A: stimulated emission B: microwaves C: maser D: stimulated emission and microwaves
- 产生激光（光的受激辐射放大）的四个过程中，最重要的是 A: Pumping B: Spontaneous emission C: Stimulated emission D: Absorption
- “污染”的英语单词是 A: Reduce B: Pollution C: Emission