更多“疗法中属于中频电疗法的是（）”相关的问题
USB诞生于1994.11.11，最早版本是USB V1.0。
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A．do B．must C．Wili D．could
A.do
B.must
C.Wili
D.could
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质量控制是消除偶发性问题，使产品质量( )在规定水平。
A．满足
B．改进
C．纠正
D．保持
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多数鱼类的体色会随着环境条件的变化而改变，经研究发现，鱼类的眼和松果体能感知光照变化而产生兴奋，当兴奋到达肾腺时，其分泌的肾上腺素能使体表黑色素细胞的色素颗粒聚集，使体颜色变浅；而当兴奋到达副交感神经...鱼体色的谰带方式是（）。
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电动机安装就位后，平皮带传动装置检查调整的项目有（）。
A.检查皮带轮大小配套情况，不配套必须进行调换
B.检查皮带扣是否扣在皮带的正面
C.检查皮带正面是否安装在外圈，否则要改换
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杆塔倾斜度监测装置应具备哪些远程调节控制功能（）。
A.身份认证、远程更新程序功能
B.按远程指令进入远程调试模式
C.动态响应远程时间查询/设置、数据请求等指令功能
D.远程指令修改采集频率、采样时间间隔等参数功能
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坚持完善党委领导、政府负责、社会协同、公众参与、法治保障的社会治理体制,提高社会治理社会化、法治化、智能化、专业化水平,推进社会治理精细化,打造____的社会治理格局。
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计算机软件系统可分为（）
A．局域网(LAN)和广域网(WAN)
B．星型、总线型和环型
C．主机、显示器、键盘、鼠标
D．运算器和控制器
E．系统软件和应用软件
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健康人在劳动时，常表现为
A．心肌收缩加强
B．射血分数增加
C．心室收缩末期容积增加
D．心指数增加
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在（）考核期内，驾驶员在“星级服务”达标工作中，累计获星多，工作突出或工作中有特殊贡献的驾驶员，集团公司将按照一定的比例给予命名、表彰和奖励。
A.年度
B.季度
C.月度
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要在Word 2002中精确地调整列宽，可选择（）菜单中的“表格属性”命令。
A、文件
B、编辑
C、表格
D、工具
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（）是只有消息的发送者才能产生，别人无法伪造的附加在消息上的一段数字串，或是对消息所作的密码变换。
A.数字密码
B.数字签名
C.密码编码
D.本人签名
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黄色圆粒豌豆与绿色皱粒豌豆杂交得到的F1再自交，F2的表现型及比例为黄圆∶黄皱∶绿圆∶绿皱=9∶15∶15∶25。则亲本的基因型为（）
A.YYRR、yyrr
B.YyRr、yyrr
C.YyRR、yyrr
D.YYRr、yyrr
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TEXT A It has been known for many decades that the appearance of sunspots is roughly periodic, with an average cycle of eleven years. Moreover, the incidence of solar flares and the flux of solar cosmic rays, ultraviolet radiation, and X-radiation all vary directly with the sunspot cycle. But after more than a century of investigation, the relation of these and other phenomena, known collectively as the solar-activity cycle, to terrestrial weather and climate remains unclear. For example, the sunspot cycle and the allied magnetic-polarity cycle have been linked to periodicities discerned in records of such variables as rainfall, temperature, and winds. Invariably, however, the relation is weak, and commonly of dubious statistical significance. Effects of solar variability over longer terms have also been sought. The absence of recorded sunspot activity in the notes kept by European observers in the late seventeenth and early eighteenth centuries has led some scholars to postulate a brief cessation of sunspot activity at that time (a period called the Maunder minimum). The Maunder minimum has been linked to a span of unusual cold in Europe extending from the sixteenth to the early nineteenth centuries. The reality of the Maunder minimum has yet to be established, however, especially since the records that Chinese naked-eye observers of solar activity made at that time appear to contradict it. Scientists have also sought evidence of long-term solar periodicities by examining indirect climatological data, such as fossil records of the thickness of ancient tree rings. These studies, however, failed to link unequivocally terrestrial climate and the solar-activity cycle, or even to confirm the cycle’s past existence. If consistent and reliable geological or archaeological evidence tracing the solar-activity cycle in the distant past could be found, it might also resolve an important issue in solar physics: how to model solar activity. Currently, there are two models of solar activity. The first supposes that the Sun’s internal motions (caused by rotation and convection) interact with its large-scale magnetic field to produce a dynamo, a device in which mechanical energy is converted into the, energy of a magnetic field. In short, the Sun’s large-scale magnetic field is taken to be self-sustaining, so that the solar-activity cycle it drives would be maintained with little overall change for perhaps billions of years. The alternative explanation supposes that the Sun’s large-scale magnetic field is a remnant of the field the Sun acquired when it formed, and is not sustained against decay. In this model, the solar mechanism dependent on the Sun’s magnetic field runs down more quickly. Thus, the characteristics of the solar-activity cycle could be expected to change over a long period of time. Modern solar observations span too short a time to reveal whether present cyclical solar activity is a long-lived feature of the Sun, or merely a transient phenomenon.
A．They disprove the reality of the Maunder minimum.B．They suggest that the Maunder minimum cannot be related to climate.C．They verify the existence of a span of unusual cold during the Maunder minimum.D．They show that the European observations are of dubious statistical significance.
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MR18发动机没有采用下列哪项技术?
A、等长的进气支管B、FSI缸内直喷技术C、曲轴偏置D、真圆加工
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