3岁小儿患先天性心脏病,X线检查示右房室增大,左心室及主动脉缩小,肺多血。提示为()
A.房间隔缺损
B.室间隔缺损
C.肺动脉狭窄
D.动脉导管末闲
E.法洛四联症
参考答案:A
________ the poem a second time, the meaning will become clearer to you.[ ]
A. Your having read
B. While reading
C. If reading
D. When you read
对于单发射孔弹装药量不大于15g的射孔器,贝雷砂岩靶的岩心直径为()。
A、102mm±3mm
B、127mm±3mm
C、140mm±5mm
D、178mm±5mm