分化型甲状腺癌患者进行131I全身显像常用剂量为
A.74~185MBq
B.370~740MBq
C.3.7~7.4GBq
D.37~74GBg
E.370~740GBq
参考答案:A
— I think teenagers should _____ to get their ears pierced.
— I agree with you. [ ]
A. are allowed
B. not be allowed
C. not allowed
碎煤机在运行中突然发生异常响声的原因之一是破碎室内有铁件和杂物等。