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U型压力计一般由U型玻璃管、板面、刻度标尺和（）。
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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. 1.Paragraph ①（） 2.Paragraph ②（） 3.Paragraph ③（） 4.Paragraph ④（） 5.Paragraph ⑤（） A.Boredom at work might be a symptom of dissatisfaction with your personal life. B.With nothing to learn in your present position, you can take steps to increase your knowledge. C.You can take steps to enhance your current role. D.Promotion is the most important factor that affects people's attitude towards work. E.Look for ways to challenge yourself. F.Being bored at work can be a miserable experience. 下列选项正确的是（） If your job offers you little stimulation, there are steps you can take（） If you′re bored with your job, it shows that you′ve mastered（） With your manager′s permission, you can take your company′s online courses during（） If your job involves（）, set a quota for the number of times you can accomplish a particular task. It′s said that boredom at work might indicate（）
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在共用设施设备的运行管理中，以下不属于建立健全的必要规章制度是（）。
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按照专有书信的用途来划分，属于提供依据、凭证的有（）。
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手持式电气设备的操作手柄和工作中接触的部分必须有良好的（）。
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液压绞车液压油的更换，应执行（）型号。
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子宫两侧的附件不包括下列哪项结构（）。
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机务段（）必须进行一次对贯彻落实《内燃、电力机车检修工作要求及检查办法》的情况进行检查。
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被鉴定人严某，女，26岁，初中文化程度。2005年4月30日持自家的菜刀将刚出生的婴儿杀死，然后割腕自杀被家人阻止而关入看守所。调查材料如下：严某2001年在深圳打工与丈夫相识后恋爱，于2004年10月结婚。婚后夫妻感情一般，与婆媳及其他亲戚的关系尚可。严某平时聪明能干，个性较内向。2006年4月9日晚产下一女婴，生产后出现中度贫血，睡眠不好，食欲差，思念娘家的人，想回老家或让其母亲来陪她未果，有时想娘家的人独自流泪。2006年4月30日上午8时许，严某持自家的菜刀将刚出生的婴儿杀死，然后准备割腕自杀被家人阻止。在看守所，严某表现心情忧愁、闷闷不乐，流露出想死的念头，睡眠不好，食欲缺乏。精神检查：意识清楚，接触被动，问话对答欠中肯。检查未发现幻觉及妄想；情绪低落，表情忧伤，自诉生小孩回丈夫家后，睡眠不好，紧张、担心、担心小孩生病，不知道怎么将小孩养大；自称自己患上产后“压抑症”；自认为自己太爱自己的女儿了，自己怀孕很辛苦，看到小孩一有风吹草动就紧张、担心小孩感冒；思念娘家的人，想回老家又回不成，想母亲来陪又来不成，心情不好，睡不好、吃不好，有时流泪。自认为自己怀小孩太辛苦，生下小孩的一刻自己很幸福，没有理由杀死小孩；觉得自己很疲劳，体力下降，精神不好，担心把小孩养不好，没有重男轻女的思想。因此想自己死了算了，想将女儿杀死后自己再自杀。自知力缺乏。根据以上材料，以下哪些有关严某的分析正确（）。
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二尖瓣关闭不全严重反流的体征可见（）