生化分析仪K 值的计算。IFCC 推荐法测定LD 的条件：光径1cm，样品体积分数0.0435，已知NADH 的摩尔吸光系数为6220Lcm－1mol－1。试求K 值。（5 分）
参考答案：解：根据KtAVVt lAU L T Δ =Δ=ε106 / ，样品体积分数＝1/(VT/V)有：K=106/（6220×1×0.0435）≈3696μmol/L（评分标准：K 的公式、样品体积分数含义、计算过程、计算结果、K 的单位μmol/L 各占1 分。另外，“IFCC推荐法测定LD 为正向反应，K 取正值”的内容，可不作要求）
根据短文内容，从下框的A—F选项中选出能概括每一段主题的最佳选项。选项中有一项为多余项。
小题2: Paris has grown steadily since it was chosen as the national capital in the late 10th century. With the introduction of the Industrial Revolution, a great number of people moved to the city from the country during the 19th century. The migration was especially stimulated by the construction of railroads, which provided easy access to the capital. After World War II more and more immigrants arrived. 小题3: The city is the centralized（中央集权） control point of most national radio and television broadcasting. It is a place of publication of the most prestigious(有威望的)newspapers and magazines and an international book publishing center. With more than 100 museums, Paris has truly one of the greatest concentrations of art treasures in the world. The Louvre, opened as a museum in 1793, is one of the largest museums in the world. 小题4: In the late 1980s about 4.1 million pupils annually attended about 47,000 elementary schools. In addition, about 5.4 million students attended some 11,200 secondary schools. Approximately 1.2 million students were enrolled（录取） annually at universities and colleges in France in the late 1980s. French centers of learning have served as academic models throughout the world. 小题5: Paris is the leading industrial center of France, with about one quarter of the nation’s manufacturing concentrated in the metropolitan area. Industries of consumers goods have always been drawn to Paris by the enormous market of the big population; and modern, high-technology industries also have become numerous since World War II. Chief manufactures are machinery, automobiles, chemicals and electrical equipment. |