激发光与发射光的波长间stakes位移最大的是()
A．FITC
B．RB200
C．血清白蛋白
D．镧系金属离子
E．异氰蒽
参考答案：D
She looked at the beautiful scarf and wondered .
A．how much does it cost
B．how much it costs
C．how much did it cost
D．how much it cost
安委会机构组成包括几个单位？
