试述肺栓塞的典型影像特征。
参考答案:答:肺栓塞的典型影像特征:节段性放射性分布缺损区,且缺损区多半与肺叶、肺段或亚肺段的解剖定位相一致,肺通气/灌注显像不匹配。
Out of__________ did the cat come and then it ran across the yard.
A.somewhere
B.anywhere
C.everywhere
D.nowhere
施工图预算的编制方法有()①扩大单价法②单价法③实物法④概算指标法⑤类似工程预算法
A.①②
B.②③
C.④⑤
D.②③⑤