为明确诊断通常使用的检查方法是
A．头颅CT
B．EBCT
C．头颅MRI
D．经颅血管多普勒
E．脑电图
参考答案：A
A．把一个金属回形针放在天平盘里仔细测量
B．把一个金属回形针放在天平盘里，测量多次，再求平均值
C．先测出100个金属回形针的质量，再计算求得
D．把一个金属回形针和一小铁块放在一起测出总质量，再减去铁块质量
A Pakistani intelligence official confirmed that the three-storey compound where Bin Laden spent his last years and was killed would be ______.
A．put down
B．taken down
C．pulled down
D．turned down
