一、补充题 1.在齿轮传动的设计和计算中,对于下列参数和尺寸应标准化的有(1)、(6)应 圆整的有(5)、(9)没有标准的化也不应圆整的有(2)、(3)、(4)、 (7)、(8)、(10) (1)斜齿圆柱齿轮的法面模数m(2)斜齿圆柱齿轮的端面模数m (3)分度圆直径d;(4)齿顶圆直径da;(5)齿轮宽度B (6)分度圆压力角a;(7)斜齿轮螺旋角B;(8)变为系数x; (9)中心距a; (10)齿厚s 2.材料为20Cr的齿轮要达到硬齿面,适宜的热处理方法是(2) (1)整体淬火;(2)渗碳淬火;(3)调质;(4)表面淬火

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题1-1:图示单向均匀拉伸的板条。若受力前在其表面画上两个正方形a和b,则受力后正 方形a、b分别变为

选择题 1、以下哪项不是常见的账务处理程序?() A、原始凭证账务处理程序 B、汇总记账凭证账务处理程序 C、科目汇总表账务处理程序 D、日记总账账务处理程序 2、记账凭证账务处理程序不适用于以下哪类单位?() A、小型企业 B、大型批零兼营商业企业 C、机关 D、事业单位

1.在齿轮传动的设计和计算中,对于下列参数和尺寸应标准化的有(1)、(6);应 圆整的有(5)、(9);没有标准的化也不应圆整的有(2)、(3)、(4)、 (7)、(8)、(10) (1)斜齿圆柱齿轮的法面模数m(2)斜齿圆柱齿轮的端面模数m (3)分度圆直径d;(4)齿顶圆直径da(5)齿轮宽度B (6)分度圆压力角a;(7)斜齿轮螺旋角B;(8)变为系数x; (9)中心距a; (10)齿厚s

It is nearly impossible to design a linear￾phase IIR transfer function It is always possible to design an FIR transfer function with an exact linear-phase response Consider a causal FIR transfer function H(z) of length N+1, i.e., of order N:

The vast majority of games of interest in economics, finance, political economy etc. involve some form of payoff uncertainty. A simple but interesting example is provided by auctions: an object is offered for sale, and individuals are required to submit their bids in sealed envelopes. The object is then allocated to the highest bidder at a price which depends on every bid, according to some prespecified rule (e.g. \first-price\ or \second-price\rule). In many circumstances (e.g. mineral rights auctions)it is reasonable to assume that the value

Signaling games are used to model the following situation: Player 1, the Sender, receives some private information and sends a message m E M to Player 2, the Receiver. The latter, in turn, observes m but not 0, and chooses response r E R. Players'payoffs depend on 0, m and r. What could be simpler? Yet, there is a huge number of economically interesting games that fit nicely within this framework: Spence's job market signaling model is the leading example, but applications abound in IO (limit pricing, disclosure...) finance (security design) and political economics

人类的胰岛细胞按其染色和形态学特点,主要分为A细胞、B细胞、D细胞及PP细胞。A细胞约占胰胰岛细胞的20%,分泌胰主血糖素( glucagon):B细胞占胰岛细胞的60%-70%,分泌胰 岛素( insulin):D细胞占胰岛细胞的10%,分泌生成抑素:PP细胞数量很少,分泌胰多肽( pancreatic polyeptide)

Mg-Ni系的一个共晶反应为 507℃ L(23.5Wt.%Ni)a(纯镁)+Mg2Ni(54.6Wt.%Ni) 设C1为亚共晶合金,C2为过共晶合金,这两种合金中的先共晶相 的重量分数相等,但C1合金中的a总量为C2合金中的q总量的 2.5倍,试计算C1和C2的成分