用于鉴别单纯性甲状腺肿与Graves病()
A.131I全身显像
B.甲状腺显像
C.99mTc-(V)DMSA显像
D.甲状腺吸131I率测定
E.碘-过氯酸钾释放试验
参考答案:E
Changes may be requested by any stakeholder involved with the project,but changes can be authorized only by()
A.executive IT manager
B.project manger
C.change control board
D.project sponsor
设抛物线y=x2与该曲线在点(1,1)处的法线所围平面图形为D,求D的面积。