第8题: [单项选择]瀑布模型将软件生命周期划分为8个阶段3个时期,需求分析属于 A. 计划期 B. 开发期 C. 运行期 D. 规划期 参考答案:B 答案解析:[解析] 瀑布模型软件生命周期的8个阶段中问题定义、可行性研究属于计划期:需求分析、总体设计、详细设计、程序编制属于开发期;测试和运行、维护属于运行期。
第15题: [单项选择]患者,男性,65岁。肺癌患者,住院化学治疗期间渐起左下肢肿胀,疼痛。Doppler超声检查提示深静脉炎。予抗凝治疗后症状有所改善。今日早餐进食时突感气急、胸闷和心前区疼痛,呈进行性加重。检查见患者口唇明显发绀,坐位,心界扩大,心率120次/分,律齐,P2亢进,三尖瓣区闻及收缩期杂音及舒张期奔马律。右下肺呼吸音降低。既往有高血压病和冠心病史。下列非创伤性检查最有诊断价值的是() A. 心电图 B. 超声心动图 C. 心脏彩超 D. 胸片 E. MRI 参考答案:E
第22题: [单项选择]{{B}}Questions 11 to 18 are based on the conversation you have just heard.{{/B}} A. She got up later than usual. B. The bus was late. C. She forgot she had classes. D. Her clock was slow. 参考答案:A 答案解析:[听力原文]
M:Nancy,why were you late today
W:I {{U}}overslept{{/U}} and missed the bus.
Q:Why was Na