可用于肿瘤非特异性显像
A.99mTc-MIBI
B.131I-MIBG
C.11C-QNB
D.99mTc-HL91
E.11C-MET
参考答案:A
. We finished the run in less than half the time _________.
A.allowing
B.to allow
C.allowed
D.allows
如果站在全球视角看,2000年以后当代金融服务业需较高的投资成本,竞争界限也不是很明显。( )