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甲醇泵的液压油变质加剧隔膜的损坏。
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下列骨折中最不稳定的骨折类型是（）
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下列关于洋务运动的评述，正确的是( )A．是中国近代化的开端，应完全肯定B．根本目的是维护清朝统治，应完全否定C．虽然没有使中国走上富强的道路，但客观上起了一定的进步作用，应辩证地看待D．目的是反动的，结果是失败的
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妊娠几周后羊水量最多（）。
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收音机中的变压器，一次绕组为1200匝，接在220V的交流电源上后，得到5V输出电压，则其二次绕组的匝数为()。
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信息插座到终端的线缆距离不应超过（）m。各水平线缆的长度不超过（）m。
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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. It′s said that boredom at work might indicate（）
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活套检测器的作用？
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Ⅱ级钢筋在普通混凝土中的绑扎接头，在受压区的最小搭接长度为（）。
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患者，女性，28岁，4年来全身各大小关节疼痛，伴有晨僵，活动后减轻，拟诊为类风湿性关节炎。以下何药不作为该患者首选（）