右侧腮腺均匀低密度病变,病变中心CT值约为-100HU,最可能的诊断是()
A.血管瘤
B.脂肪瘤
C.多性形腺癌
D.腮腺囊肿
E.腮腺脓肿
参考答案:B
---I will have to think about it again.
--- If you _ , you may lose the opportunity to compete altogether.
A.hesitate
B.wonder
C.continue
D.fail
整流电焊机是将交流电经过()整流成直流电的一种电焊机。
A、电阻
B、电容
C、铁心
D、二极管