男性,24岁,因劳力时气短就诊,查体发现胸骨左缘第3~4肋间听到收缩期喷射性杂音,X线胸片示心脏轻度增大,超声心动图示室间隔与左室后壁增厚,其比值>1.3,最可能的诊断是()。【2003年考试真题】
A. 冠心病
B. 高血压性心脏病
C. 肥厚型心肌病
D. 风湿性心脏病主动脉瓣狭窄
E. 扩张型心肌病
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女性,25岁,心悸气短5年,近2年加重。查体:心尖区听到舒张期隆隆样杂音,心律不齐。M型超声心动图示:二尖瓣前叶曲线EP斜率降低,A峰消失,后叶前向运动瓣叶增厚,其诊断为()。
A. 左房黏液瘤
B. 风心病,二尖瓣狭窄
C. 室间隔缺损
D. 肥厚型梗阻性心肌病
E. 主动脉瓣关闭不全
一切体力活动都引起不适,静息时也可发生心绞痛是E.
行政诉讼是对行政机关执法活动的司法监督。 ()
A. 正确
B. 错误
All of the following are mentioned in the passage as circumstances in which professional service firms can benefit from offering an unconditional guarantee EXCEPT______
A. The firm is having difficulty retaining its clients of long standing.
B. The firm is having difficulty getting business through client recommendations.
C. The firm charges substantial fees for its services.
D. The adverse effects of poor performance by the firm are significant for the client.
E. The client is reluctant to incur risk.