缩窄性心包炎时,超声检查可发现()
A.心包脏层和壁层增厚
B.室间隔和室璧活动幅度明显变小
C.心室腔扩张
D.二尖瓣血流舒张早期最大流速升高
参考答案:A, B, D
根据句意及首字母提示完成单词。
1. He is very w_____. He always does things without thinking carefully.
2. The story made us 1_____.
3. He had a bad grade in the English test. His father wasn't happy and
b_____ him yesterday evening
4. Jim likes math. But Jack likes p_____.
5. They don't agree with you. They have other v_____.
6. Lucy does her s_____ every day.
保密工作领导责任制原则是什么?