中腹部听到喷射性杂音，提示的疾病是（）
A.腹主动脉瘤
B.肾动脉狭窄
C.髂动脉狭窄
D.门静脉高压
E.腹壁静脉曲张
参考答案：A
Look and answer. 看表格，回答问题。
1. Beijing is 2:00. What time is it in Sydney?
2. London is 7:00. What time is it in New York?
3. New York is 3:00. What time is it in Beijing?
4. Sydney is 7:00. What time is it in London?
后张法预应力施工前，应清除孔道内的（）；预应力筋张拉完成后，应尽早进行（）。
