I 最短路径问题 II 最近设施问题 III 获取方向问题 IV点位服务区问题 V 设置一个网络

4开集、闭集 若E°=E,则称E为开集(E中每个点都为内点) 若E=E,则称E为闭集(与E紧挨的点不跑到E外) P为E的接触点:Vδ>0,有Opo)E≠Φ

1带传动的受力分析、应力分析和弹性滑动。 2普通V带传动的设计计算和主要参数对传动性能的影响。 3滚子链传动的运动特点、失效形式

I. Introduction II. Atmospheric pollution III. Waterborne pollution IV. organic poisons, inhibitors and contaminants V. Particulate pollution

对二维rv.除每个rv各自的概率特 性外,相互之间可能还有某种联系 怎样用一个数去反映这种联系? 数E(-(X)[-E(Y) 便反映了r.v.X,Y之间的某种关系

VOCABULARY Section A Directions: There 80 sentences in this exercise. Beneath each sentence there are four choices. Choose the one word or phrase that you think best completes the sentences

Problem set 1 Solutions Due: Monday February 7 at 9 PM Problem 1. The connectives A(and), V(or), and =(implies)come often not only in com uter programs, but also everyday speech. But devices that compute the nand operation

3-1一台四极直流电机,元件数S=120,每元件电阻为0.2,当转速为1000r/min时,每元件的平 均电动势为10V。求当电枢绕组分别为单叠和单波时,正负电刷间的电压U和电枢绕组电阻R各 为多少?

VOCABULARY Section A Directions: There 80 sentences in this exercise. Beneath each sentence there are four choices. Choose the one word or phrase that you think best completes the sentences

支票给银行从存款中支付具体款项的书面支票:汇票 Issue v tr. To circulate or distribute in an official capacity 流通,发出通过政府机关流通或分配 Automatic teller machine Nowhere adv.无处;任何地方都不 nowhere to hide We are nowhere near your bank. cashier n(商店等的)出纳员,(银行或公司的)司库