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题目：
单选题
A大约10年
B身体智力发展最快的时期
C加强营养
D生殖器官发育也最快
E易发生外阴阴道炎
答案：
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女性，65岁，间断咳喘20多年，1月来加重伴水肿。查体：端坐位，发绀，两肺可闻干湿性啰音，双下肢水肿。经抗感染、利尿等治疗后病情好转。但2天后神志不清，手足搐搦。血气分析pH7.50，PaO270mmHg，PaCO260mmHg，HC0-343mmol／L，K+3.0mmol／L，Na+132mmol／L，Cl-70mmol／L。该患者的酸碱失衡类型为（）
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商家在商场中需要达到谁的要求?
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汽车在高原行驶时，动力下降的原因主要是（）。
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正常人每天食物中含铁量（）。
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Boredom at Work ① You might find yourself staring at the clock, willing it to move faster so the boring workday will finally end. If your job offers little in the way of stimulation, there are steps you can take inside and outside the workplace. ② If you're bored with your job, it could be a sign that you've mastered the basic requirements and are ready for more of a challenge. You might not have been in your position long enough to request a promotion. Still, you can take steps to enhance your current role. Ask your boss if there are any projects you can help with. Volunteer to train less experienced colleagues. You'll feel more stimulated at work and also increase your chances of future advancement. ③ If you feel there is nothing left to learn in your present position, take steps to increase your knowledge. Your company's website might have online courses you can take during your slow periods, with your manager's permission. Enroll in training classes your company offers in areas that interest you. You also can pursue educational opportunities outside of the workplace, such as college classes, industry-specific training programs or self-improvement courses. If the knowledge you acquire doesn't help you in your present position, it might eventually help you move into a more fulfilling position. ④ Look for ways to challenge yourself. If your job involves performing repetitive tasks, set a quota for the number of times you can accomplish a particular task during the course of a shift. This will give you something to shoot for. If you have co-workers who perform the same tasks, make a friendly wager to see who can do the most. You'll form stronger bonds with your colleagues, and your employer is likely to notice your increased productivity. ⑤ According to psychotherapist and career coach Nina Ham, boredom at work might be a symptom of dissatisfaction with your personal life. Finding sources of stimulation outside of work can have a positive impact on your attitude toward your job. Seeking counseling for an emotional issue can also be of benefit. If your personal life is going well and nothing you try seems to improve your engagement level at work, it might be time to consider a job or even a career change. If your job involves（）, set a quota for the number of times you can accomplish a particular task.
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AEU单板最多提供多少路E1/T1？
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单形
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δ函数的频谱是（）谱。
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成本利润分析是期货市场定量分析的一种重要方法。
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原庄宗之所以得天下，与其所以失之者，可以知之矣。句中的三个“之”是什么意思？