一、最佳选择题 1.d2.c3.b4.a5.c6.e7.e8.d9.c10.c 二、简答题(略) 三、计算分析题 1.根据1999年某地某单位的体检资料,116名正常成年女子血清甘油三酯的结果做统计分析

一、选择题: 1、D2、C3、A4、D 二、问答题: 1、农业是经济发展、社会稳定、国家自强的基础。我国正处于社会主义发展的初级阶段,农业对于国民经济发展具有决定性的影响,农业的基础性作用更为显著

18.1.1 D/A转换器的基本原理及分类 18.1.2 D/A转换器主要指标 18.1.3 集成D/A转换器

D1 The immune system D2 Antibody structure D3 Polyclonal and monoclonal antidies D4 Antibody synthesis D5 Antibodies as tools

We will start by studying the motion of a particle. We think of particle as a body which has mass, but has negligible dimensions. Treating bodies as particles is, of course, an idealization which involves an approximation. This approximation may be perfectly acceptable in some situations and not adequate in some other cases. For instance, if we want to study the motion of planets it is common to consider each planet as a particle

选用D2EHPA-TOA体系作为低品位硫化锌矿生物浸出液中锌的富集和铁的去除的溶剂萃取体系.结果表明,该体系能显著改善硫酸锌溶液中锌的萃取富集和铁的去除性能.锌的最大饱和容量增加约12%,负锌有机相只需用0.25mol/L的稀硫酸经一级即可达到完全反萃,负铁有机相可以用4mol/L硫酸反萃除去

In this lecture, we consider the problem of a body in which the mass of the body changes during the motion, that is, m is a function of t, i.e. m(t). Although there are many cases for which this particular model is applicable, one of obvious importance to us are rockets. We shall see that a significant fraction of the mass of a rocket is the fuel, which is expelled during flight at a high velocity and thus, provides the propulsive force for the rocket

一、判断题 1.齿面塑性流动在主动轮节线附近形成凹槽。() 2.开式齿轮传动通常不会发生点蚀现象。() 3.齿宽系数中是齿宽b与齿轮直径d2比值。() 4.直齿圆锥齿轮传动以大端参数为标准值,因此在强度计算时以大端为准。()

2006年4月笔试试卷参考答案 一、选择题 (1)D)(2)A)(3)D)(4)B)(5)A)(6)D)(7)C)(8)D) (9)A)(10)C)(11)D)(12)C)(13))(14)A)(15)C)(16)A) (17)D)(18)D)(19)D)(20)A)(1)C)(22)D)(23)D)(24)D) (25)D)(26)B)(27)D)(28)A)(9)A)(30)B)(31)D)(32)D) (33)C)(34)D)(35)C)

2.1 什么是3D打印 2.2 打印方法简介 2.3 金属3D打印 2.4 3D打印应用示例 2.5 3D打印优势与不足