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残余应力对钢材的受力性能有何影响？

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心电图上代表房室传导的时间是（）。

A. P波
B. QRS波群
C. T波
D. P-R间期
E. U波

A system administrator has added a new graphics card to the system and rebooted. The system pauses with C31 in the three-digit displays. Which of the following causes could be the reason for the hang?（）

All filesets for CDE have not been loaded. Boot into maintenance mode and load them through SMI
B. There is a missing device driver, incorrect console configuration, or a serial device plugged into native S1 port.
C. The new graphics adapter card is marked defined, not available. Rum smit cfgmgr (Install/Configure Devices Added After IPL with the INPUT device /directory for software set to none). This will reconfigure all devices by walking the bus.
D. The LED C31 means that there is a corrupted /dev/hd5. Boot into maintenance mode, fsck /dev/hd5 and then issue the bosboot command.

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整治线（治导线）

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病历摘要男性，45岁。发热、咳嗽4天，右侧胸痛1天。患者4天前户外扫雪出汗较多，过后出现发热、咳嗽、咳痰，最高体温39.4℃，伴寒战。痰为脓性，量中等。痰中无血、无明显呼吸困难。自服"感冒药"体温可暂时下降，但症状无改善。1天前出现右侧胸痛，吸气时加重。在社区医院化验示：WBC16.4×10⁹／L，N0.87，Hb138g/L。发病以来食欲差，睡眠可，大小便正常。既往史：体健，无药物过敏史，无结核病史，无吸烟史。查体：T38.8℃，P92次／分，R23次／分，BP125/75mmHg，神志清楚，皮肤黏膜无皮疹和出血点，浅表淋巴结未触及。巩膜无黄染，口唇略有发绀。右上肺叩诊呈浊音，可闻及支气管呼吸音，右肩胛线第9肋以下叩诊呈实音，呼吸音明显减弱，未闻及胸膜摩擦音。心界不大，心率92次／分，律齐，各瓣膜区未闻及杂音。腹平软，肝脾肋下未触及，Babinski征（-）。辅助检查：胸部X线片示：右上叶可见大片状阴影，其内可见支气管充气相。右侧肋膈角消失，其上缘为外高内低的弧形影。要求：根据以上病历摘要，请写出初步诊断及诊断依据、鉴别诊断、进一步检查与治疗原则。

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