单项选择题
A.1mSv B.5mSv C.15mSv D.50mSv E.100mSv
A.99mTc-HSA或99mTc-DTPA气溶胶 B.133Xe C.81mKr D.99mTc-MAA E.99mTc气体
A.3.7MBq B.37MBq C.37~148MBq D.370~740MBq E.740MBq