意义障碍
Prices determine how resources are to
be used. They are also the means by which products and services that are in
limited supply are rationed among buyers. The price system of the United States
is a very complex network composed of the prices of all the products bought and
sold in the economy as well as those of a myriad of services, including labor,
professional, transportation, and public-utility services. The
interrelationships of all these prices make up the "system" of prices. The price
of any particular product or service is linked to a broad, complicated system of
prices in which everything seems to depend more or less upon everything
else. If one were to ask a group of randomly selected individuals to define "price", many would reply that price is an amount of money paid by the buyer to the seller of a product or service or, in other words, that A. Instructions that come with a product. B. The quantity of a product. C. The quality of a product. D. Warranties that cover a product. [判断题] 接触电压是指人站在带电外壳旁(水平方向0.8m处),人手触及带电外壳时,其手、脚之间承受的电位差。()
A.正确 B.错误 [多选题]室内消火栓给水系统按压力可分为( )。
A.室内低压消防给水系统 B.室内高压消防给水系统 C.临时高压消防给水系统 D.临时低压消防给水系统 E.中压消防给水系统 [单项选择]技术分析适用于( )。
A. 短期的行情预测 B. 周期相对比较长的证券价格预测 C. 相对成熟的证券市场 D. 适用于预测精确度要求不高的领域 [多项选择]实验动物选择的基本原则是()。
A. 尽量选择研究对象的功能、代谢、结构及疾病性质与人类相似的动物 B. 选用解剖、生理特点符合实验目的要求的实验动物 C. 选择高标准的实验动物 D. 符合实验动物选择的一般原则 [单项选择]哪种病人应禁用或慎用羟丁酸钠()。
A. 高血钾 B. 低血钾 C. 黄疸 D. 老人、儿童 E. 心功能不全 [单选题]药物产生作用的快慢取决于:
A.药物的吸收速度 B.药物的排泄速度 C.药物的转运方式 D.药物的光学异构体 E.药物的代谢速度 [判断题]肺根不包括肺动脉。( )
A.正确 B.错误 [单项选择]DK-1型电空制动机在电阻制动开始前能自动施行()。
A. 最大减压量; B. 最小减压量; C. 常用制动; D. 100kPA。 [单选题] 小型民用爆炸物品储存库值班室距雷管库的距离不应小于( )米。
A.10 B.12 C.15 D.20 [单选题]10kV带电作业人员的感应电压为4kV,作业人员对地电容为1.5×10-12F,作业人员可视为良导体。流经人体的容性电流是(____)A。
A.2×10-3 B.2×10-6 C.3×10-6 D.3×10-3 [单项选择]与物质彻底氧化分解有关的代谢是
A. 三羧酸循环 B. 鸟氨酸循环 C. 蛋氨酸循环 D. 柠檬酸-丙酮酸循环 E. 乳酸循环 [单选题]11.各种胃病中发病率占首位的是
A.胃癌 B.慢性胃炎 C.胃溃疡 D.十二指肠溃疡 E.食管炎 [单项选择]在眼部异物中,CT检查难以发现的为()
A. 铁 B. 泥沙 C. 铜 D. 合金 E. 铝 [单选题]滑轮罩与滑轮外缘的间距,应在保证不碰的情况下()一些为好。
A.略大 B.任意 C.略小 我来回答: 提交
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