A(n) ________ is a printed record of the brain's electrical activity over a period of time.
A、electrocardiogram
B、electroencephalogram
C、x-ray
D、MRI
E、CT
发布时间:2025-07-19 04:17:13
A、electrocardiogram
B、electroencephalogram
C、x-ray
D、MRI
E、CT