脉络膜脱离( )
A.CT显示“轨道征” B.B超显示呈“对吻状” C.B超显示“慧尾征” D.CT显示“钙斑” E.B超显示呈“挖空征”
参考答案:B
It was several minutes before I was ______of what was happening.
A.aware
B.accused
C.tired
D.a shamed
门径管理模型每个阶段之间都有一个入口,这些入口就是质量与风险控制的检测点与决策点。