更多“应测量有功功率的回路有( )。”相关的问题
在普通V带传动时，从动轮的圆周速度低于主动轮的圆周速度，则V2 ，其速度损失常用滑差率 表示，值随所传递的载荷的增加而（）。
A.减小 B.增大 C.不变
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在等方面有突出贡献者,予以一次性奖励（）
A.技术革新、技术改造
B.科研攻关
C.发明创造
D.提出合理化建议
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企业法律顾问为企业领导决策和重要经济活动提供咨询意见的主要任务是( )。
A．对领导提出的问题，及时、准确地给予明确的答复，提供法律依据，进行法律上的比较、分析
B．对领导虽然没有直接询问，但关系决策是否合法、可行的重大法律问题及时提出意见
C．针对问题和决策事项，提出较全面的建议方案
D．对决策的执行情况进行评估总结
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岩石根据坚固系数的大小分级，ⅹⅤ级的坚固系数的范围是（）。
A.10～25
B.20～30
C.20～25
D.25～30
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Atwater公司记录了以下的当期支付情况 购买Trillium的股票 $300,000 支付给Atwater股东的股利 200,000 回购Atwater公司股票 400,000 在Atwater现金流表的投资活动部分的现金流应该是
A.$500,000
B.$700,000
C.$300,000
D.$900,000
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原油的资源税征税范围限定如下：（）
A.原油是指开采的天然原油，不包括人造石油
B.包括人造石油
C.油页岩
D.所有的石油产品
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A . 计算依据和手段要有科学性B . 计算方法要有高度的适应性C . 报告期的选择要有较好的均衡性和代表性D . 样本股票要具有代表性、典型性
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一个企业应具备的公共关系能力包括哪些______
A.沟通能力
B.强烈的品牌意识
C.科学的危机管理手段
D.避免危机发生的手段
E.以上选项全部正确
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2007年美国国内生产总值(GDP)为138075亿美元，商品进口额为 19678.53亿美元，商品出口额为11484.81亿美元，则2007年美国外贸依存度为()
A.5.9%
B. 8.3%
C. 14.3%
D. 22.6%
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第三篇 When to Take Medicine Is Important Our bodies are wonderfully skillful at maintaining balance. When the temperature jumps, we sweat to cool down. When our blood pressure falls, our hearts pound to compensate. As it turns out, though, our natural state is not a steady one. Researchers are finding that everything from blood pressure to brain function varies rhythmically with the cycles of sun, moon and seasons. And their insights are yielding new strategies for keeping away such common killers as heart disease and cancer. Only one doctor in 20 has a good knowledge of the growing field of "chronotherapeutics", the strategic use of time (chronos) in medicine. But according to a new American Medical Association poll, three out of four are eager to change that. "That field is exploding," says Michael Smolensky. "Doctor used to look at us like, what spaceship did you guys get off Now they’re thirsty to know more." In medical school, most doctors learn that people with chronic conditions should take their medicine at steady rates. "It’s a terrible way to treat disease," says Dr. Richard Martin. For example, asthmatics (气喘患者) are most likely to suffer during the night. Yet most patients strive to keep a constant level of medicine in their blood day and night, whether by breathing in on an inhaler (吸入器 ) four times a day or taking a pill each morning and evening. In recent studies, researchers have found that a large midafternoon dose of a bronchodilator (支气管扩张) can be as safe as several small doses, and better for preventing nighttime attacks. If the night belongs to asthma, the dawn belongs to high blood pressure and heart disease. Heart attacks are twice as common at 9 a.m. as at 11 p.m. Part of the reason is that our blood pressure falls predictably at night, then peaks as we start to work for the day. "Doctors know that," Dr. Henry Black of Chicago’s Medical Center, "but until now, we haven’t been able to do anything about it." Most blood-pressure drugs provide 18 to 20 hours of relief. But because they’re taken in the morning, they are least effective when most needed. "You take your pill at 7 and it’s working by 9," says Dr. William White of the University of Connecticut Health Center. "But by that time you’ve gone through the worst four hours of the day with no protection." Bedtime dosing would prevent that lapse, but it would also push blood pressure to dangerously low levels during the night.
A．heart disease and cancer are the most common killers of human beingB．blood pressure and brain function are decided by cycles of sun, moon and seasonsC．the functions of human bodies have much to do with natureD．any change in human bodies goes systematically with changes in the environment
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董事会是公司的权力机构，依照公司法行使职权。（）
A.对 B.错
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牙齿磨耗可以发生在（）
A.牙合面，切嵴，唇面
B.牙合面，唇面，舌面
C.切嵴，唇面，舌面
D.牙合面，邻面，舌面
E.牙合面，切嵴，邻面
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急性腹痛发病1周后，对胰腺炎具有诊断价值的检查为
A．白细胞计数及分类
B．血清淀粉酶
C．空腹血糖测定
D．血清脂肪酶
E．X线腹部平片
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日租宽带特惠套餐2元/天，超出6天的使用部分，按照（）元/天收取宽带日租费。
A.1
B.2
C.3
D.6
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