脾病的常见症状应除外下列哪项()
A.腹胀
B.纳少
C.便溏
D.呕恶
E.浮肿
参考答案:D
下列哪点不是二尖瓣或主动脉瓣关闭不全病人迅速恶化的原因()
A.异常的左室对后负荷增加的反应是急性扩张
B.此时交感神经代偿失调,血管扩张
C.阻力血管收缩
D.LVEDP上升,前向每搏量下降
E.扩张的心室收缩力不增加
A virtual memory system has five virtual pages numbered zero through four and three page frames. All the page frames are initially empty. How many page faults are generated with the following access sequence using a FIFO replacement policy0 1 2 3 0 1 4 0 1 2 3 4
A.8
B.9
C.10
D.11