所有的生物体在一定的条件下都能产生多种多样的酶。酶在生物体内产生的 过程,称为酶的生物合成。 经过预先设计,通过人工操作控制, 利用细胞(包括微生物、植物细胞和动物细胞)的生命活动,产生人们所需要的酶的过程,称为酶的发酵生产。 酶的发酵生产是现在酶生产的主要方法

Index absorptance HT-54 cylindrical geometry see non-planar geometry absorption HT-57 adiabatic 0-5.0-9 Diesel cycle 2A-4 adiabatic efficiency see efficiency diffusivity ht-22 adiabatic flame temperature 2C-7 dissipation 1C-10 drag HT-24 Biot number HT-30, HT-36 black body HT-56, HT-63 see also

2. B Power Cycles with Two-Phase Media (Vapor Power Cycles) [SB&vw-chapter 3, Chapter ll, Sections 11.1 to 11.7] In this section, we examine cycles that use two-phase media as the working fluid. These can be combined with gas turbine cycles to provide combined cycles which have higher efficiency

1. D: Interpretation of Entropy on the Microscopic Scale- The Connection between Randomness and entropy 1. D I Entropy Change in Mixing of Two ldeal gases Consider an insulated rigid container of gas separated into two halves by a heat conducting partition so the temperature of the gas in each part is the same. One side contains air, the other side another gas, say argon, both regarded as ideal gases. The mass of gas in each side is such

PaRT 1. THE SECOND LAW OF THERMODYNAMICS l.A. Background to the second Law of Thermodynamics AW 23-31(see IAW for detailed VwB&s references); VN Chapters 2, 3, 4 1-A. I Some Properties of engineering Cycles; Work and Efficiency As motivation for the development of the second law, we examine two types of processes that

1. C Applications of the Second Law N-Chapter6;VWB&S-8.1,8.2,8.5,8.6,8.7,8.8,9.6] 1. CI Limitations on the work that Can be supplied by a heat engine The second law enables us to make powerful and general statements concerning the maximum work that can be Q1

一、选择合适的答案,填入空内。只需填入A、B或C (1)功率放大电路的最大输出功率是在输入电压为正弦波时,输出基本不失真情况下,负载上可能获得的最大 A.交流功率 B.直流功率 C.平均功率

1、环境地质学概念(Concept) 是认识“系统环境”的一门综合性学科, 是研究环境科学、地质科学,系统了解地球本身的一门基础科学 。人类只有一个地球,共同的家园。 2、环境地质学学习意义(why study it) 不了解地球的学者不算一个完美的学者,环境地学知识能使其它 学科,在设计施工、决策上站在“地球环境”的高度上考虑问题 3、授课对象(who study it)

一、判断下列说法是否正确,用“√”或“”表示判断结果。 (1)在图T8.1所示方框图中,若中F180°,则只有当中A=±180°时,电路才能产生正弦波振荡。()

厂址选择是生产运作系统规划和设计的重点内容。任何一个生产运作系统都是由建 筑物、设施、设备等各种物质要素构成的,是生产运作系统的空间实体形态的具体表现。 生产运作系统的规划与设计,就是运用科学的方法和手段对生产运作系统的各种物质要 素进行合理的选择和布置,使其形成一个有机系统,能够用最经济的方式和最高的效率 生产产品或提供服务。其中,厂址选择是生产系统规划和设计的第一步,也是十分重要 的一步