更多“已知某企业的成本函数为C=q2＋100，C为总成本，q为产量”相关的问题
男性，40岁。临床诊断为等渗性缺水、低钾血症。经补液、补充钾盐后，出现脉率缓慢，手足感觉异常，肌无力，恶心、呕吐等症状。查体：血压90/60mmHg，脉搏50次／分。神志淡漠，心音减弱。ECG检查：T波高而尖，QT时间延长。临床判断为高钾血症，下列紧急治疗措施中，不宜采取的是（）。
A.立即停止钾盐的输入，静注5%碳酸氢钠60～100ml
B.25%葡萄糖溶液100～200ml，按每5g糖加入1IU胰岛素进行静脉滴注
C.硫酸镁1g，加入5%葡萄糖液或生理盐水500ml中静滴
D.呋塞米20～60mg加入50%葡萄糖40ml静注
E.10%葡萄糖酸钙20ml静脉注射
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宏观环境是指能影响整个微观环境的、广泛的社会性因素，包括______。
A．人口
B．经济
C．政治
D．法律
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患者，女性，35岁，因支气管哮喘急性发作，呼吸极度困难入院。入院后护士应协助其取
A . 端坐位
B . 仰卧位C . 俯卧位D . 中凹卧位E . 头低足高位
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有压圆管均匀流的切应力τ沿断面的分布是( )。
A．均匀分布
B．管壁处是零，向管轴线性增大
C．管轴处是零，与半径成正比
D．按抛物线分布
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My name is Jane Eyre and my parents died when I was a baby. For ten years I lived a (36) life with m...[A] yet [B] so [C] still [D] though
At first my (43) at Lowood School was not easy. The food was bad and I was often cold but I made (44) and enjoyed studying. But after an illness killed several students, new owners (45) the school and life improved. Six years later I (46) a teacher and was very happy. But eventually(最后) I felt that I should explore more of the world and found a job as a private teacher in a (47) .
Before I left Lowood, I was (48) by Bessie, who told me that seven years ago my father’s brother had come (49) me but left again to go abroad. "He looked like quite a gentleman," said Bessie. I wondered if he would ever look for me again.
My new life (50) at Thornfield Hall, a large country house, (51) a little girl called Adele. She was the adopted(被收养的) daughter of the owner of the house, Mr Rochester. He (52) stayed at Thornfield and (53) my time was mainly spent with Adele and the servants. My life was quite happy now although there was something (54) about my new home. Often I heard odd (奇怪的) sounds (55) from the top floor of the house.
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下面有关派特（PET）检查在肺癌诊断中应用的叙述哪项是正确的（）。
A.可以明确肺癌的病理类型 B.由于是一种代谢性影像学检查，不易受到其他因素的干扰 C.检查费用低廉而常用于肺癌的普查 D.是一种无创性定性检查 E.敏感性和特异性非常高
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生成矩阵A的任意非负整数指数幂都属于Ω{b1An-1+„bnI|bi∈Z2}，那么Ω中元素个数有多少？（）
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排球传球时主要靠（）控制球的方向。
A.拇指与中指
B.中指、食指与拇指
C.中指与食指
D.无名指与小指
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A．尺泽B．曲池C．曲泽D．上巨虚E．下巨虚
A．B．C．D．E．
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当发生茄子青枯病时，用手挤压病茎的横切面，有（）色的黏液渗出。
A . 黑
B . 红
C . 褐
D . 乳白
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简述VPI、VCI 、VPC、VCC的含义、联系和区别。
一般评价SO3H键合相色谱柱时所用的流动相为（）。
A.甲醇-水（83/17）
B.正庚烷-异丙醇（93/7）
C.0.1mol/L的硼酸盐溶液（90/10）
D.0.05mol/L的甲酸铵-乙醇（pH9.2）
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采用火花间隙法带电检测零值绝缘子时，应注意()。
A.作业前应校对火花间隙的距离
B.作业前应对火花间隙检测器进行检测，确保操作灵活，测量准确
C.同一串中的零值绝缘子个数超过规程规定时，应立即停止检测
D.检测应在良好的天气下进行
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使用具备记录存储冠字号码功能的存取款一体机存储、记录的纸币冠字号码，在没有实现数据导出之前应能做到在本机直接检索。
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