更多“飞机速度或抖动过大，要适当（）快门速度来获得清晰的成像。必要”相关的问题
患者男，26岁，外伤致右上切牙冠横折，龈上残余牙冠高度3mm，无松动，根长13mm，咬合关系正常。可采取的最佳治疗方案是
A．保髓治疗后，牙本质螺纹钉+树脂修复
B．根管治疗后，树脂核+烤瓷全冠修复
C．根管治疗后，非金属全冠修复
D．根管治疗后，非贵金属桩核+烤瓷全冠修复
E．根管治疗后，非金属桩+树脂核+全瓷冠修复
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联络神经元主要存在于( )。
A．脊髓
B．肌肉
C．腺体
D．脑
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反映房屋建设状况的主要统计指标不包括( )。
A．房屋施工面积
B．房屋新开工面积
C．房屋减少建筑面积
D．竣工房屋面积
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牙体预备不当引起牙髓最严重的损伤是
A．牙髓激惹
B．牙髓变性
C．牙髓坏死
D．急性牙髓炎
E．慢性牙髓炎
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变电站设备发生变更后，采用（）的变电站，运维单位应对一次接线图及防误规则表进行验收。
A.独立微机防误闭锁装置B.监控防误系统C.智能防误系统D.就地防误装置
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药品质量标准的性状项下主要记叙药物的 ( ) 多选A.外观、臭、味B.溶解度C.类别D.物理常数
A. 正确答案B. 正确答案C. 错误答案D. 正确答案
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含气量测定仪的率定步骤中，下列说法正确的是：（）
A . A、容器中注满水时测得的含气量为0；
B . B、每一含气量值对应压力值应试验三次；
C . C、每一含气量值试验相对误差均应小于0.2%，否则应重新测定；
D . D、据此检验以上含气量0、1%…、8%共9次的测量结果，绘制含气量与气体压力之间的关系曲线。
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液压系统应设过压保护装置，当工作压力达到额定压力的1.25倍时，能自动动作。（)
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岁女孩患弥漫性毒性甲状腺肿，下列哪项临床表现不符合（）
A.双手细震颤
B.食欲亢进、消瘦、怕热、多汗
C.便次数增多
D.月经过多
E.脉压增大、水冲脉
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《建筑施工碗扣式钢管脚手架安全技术规范》（JGJ166-2008），当横杆承受非节点荷载时，应进行（）承载力度算。
A.受压。
B.受剪。
C.受拉。
D.压弯。
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A new study suggests that contrary to most surveys, people are actually more stressed at home than at work. Researchers measured people"s cortisol, which is a stress marker, while they were at work and while they were at home and found it higher at what is supposed to be a place of refuge."Further contradicting conventional wisdom, we found that women as well as men have lower levels of stress at work than at home," writes one of the researchers, Sarah Damske. In fact women even say they feel better at work, she notes. "It is men, not women, who report being happier at home than at work." Another surprise is that findings hold true for both those with children and without, but more so for nonparents. This is why people who work outside the home have better health.What the study doesn"t measure is whether people are still doing work when they"re at home, whether it is household work or work brought home from the office. For many men, the end of the workday is a time to kick back. For women who stay home, they never get to leave the office. And for women who work outside the home, they often are playing catch-up-with-household tasks. With the blurring of roles, and the fact that the home front lags well behind the workplace at making adjustments for working women, it"s not surprising that women are more stressed at home.But it"s not just a gender thing. At work, people pretty much know what they"re supposed to be doing, working, making money, doing the tasks they have to do in order to draw an income. The bargain is very pure: Employee puts in hours of physical or mental labor and employee draws out life-sustaining moola.On the home front, however, people have no such clarity. Rare is the household in which the division of labor is so clinically and methodically laid out. There are a lot of tasks to be done; there are inadequate rewards for most of them. Your home colleagues—your family—have no clear rewards for their labor; they need to be talked into it, or if they"re teenagers, threatened with complete removal of all electronic devices. Plus, they"re your family. You cannot fire your family. You never really get to go home from home.So it"s not surprising that people are more stressed at home. Not only are the tasks apparently infinite, the co-workers are much harder to motivate.
A．it is difficult for them to leave their officeB．their home is also a place for kicking backC．there is often much housework left behindD．they are both bread winners and housewives
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A . CK≥10-8B . CK≥10-6CK≥10-5D . 不需要任何条件
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在 示波器实验中，观测电压随时间变化特征时，将被测电压信号接到（ ）轴偏转板上，将扫描电压接到（ ）轴偏转板上，当扫描电压周期 T 1 和被测信号周期 T 2 满足（ ）关系时，示波器显示稳定图像。由此可见示波器显示被测电压信号的实质是（ ）。
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2014年6月28日，在人民大会堂隆重举行和平共处五项原则发表60周年纪念大会。和平共处五项原则是国际关系史上的重大创举，为推动建立公正合理的新型国际关系作出了历史性贡献。下列不属于其作出历史性贡献的原因是( )A. 集中体现了主权、正义、民主、法治的价值观B. 都由社会主义国家所提出C.有力维护了广大发展中国家权益D.为推动建立更加公正合理的国际政治经济秩序发挥了积极作用。
A.有力维护了广大发展中国家权益D.为推动建立更加公正合理的国际政治经济秩序发挥了积极作用。
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儿童易患的传染病其传播途径多数是
A．经食物传播
B．经土壤传播
C．经空气飞沫传播
D．日常生活接触传播
E．经媒介节肢动物传播
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