单项选择题
SPECT的系统分辨率等于（）A．固有分辨率1/2+准直器分辨率1/2B．固有分辨率+准直器分辨率C．固有分辨...
单项选择题SPECT的系统分辨率等于（）
A．固有分辨率1/2+准直器分辨率1/2 B．固有分辨率+准直器分辨率 C．固有分辨率2+准直器分辨率2 D．固有分辨率×准直器分辨率 E．固有分辨率/准直器分辨率
（） what would happen, none of them could find a way out...
单项选择题（） what would happen, none of them could find a way out.
A. Left wondering B. Having left wondering C. Leaving to wonder D. Having left to wonder
The noun bear and verb bear are（）A. homophones B. homog...
单项选择题The noun bear and verb bear are（）
A. homophones B. homographsC. homonymsD. allophones
