In going from the state space model i(t)=A.(t)+ Bu(t y(t)= Ca(t)+ Du(t) to the transfer function G(s)=C(sI -A)-B+D need to form the inverse of the matrix(sI- A)-a symbolic inverse- not easy at all For simple cases, we can use the following

8.1过渡元素的通性 具有部分填充d或f壳层电子的元素

(1)1/0方程:D(p)r(t)=N(p)e(t) (2)系统函数H(s)=(s) (3)框图/流图 (4)状态方程

一、单项选择题 1、企业为满足交易动机所持有的现金数量主要取决于() A.企业的支付能力B.企业的生产能力 C.企业的偿债能力D.企业的销售水平

一、单项选择题 1.下列哪种投资组合策略必须具备丰富的投资经验() A、保守型策略B、冒险型策略C、适中型策略D、投资型策略

1、关于某种特殊条件可能产生某种特定结果的可检测的预测叫作: a)推论 b)数据 c)外化解释 d)假设

8.5.1配位场化学 化合物着色的最重要的来源是过渡族元素 (cr,mn,fe,o,Ni)或稀土元素离子(钕、铒、钬 等),它们或出现于固溶体中,或以晶体的固有阳离 子存在。 这些元素在电子占据轨道方面不同于主族元素。如对 于过渡族元素,主要涉及能量很相近的部分添满的3d 轨道(简并能级)

一、气体交换的原理 原理:扩散。 动力:膜两侧的气体分压差。 速率:=扩散速率(D) 分压差温度〤气体溶解度×扩散面积 扩散距离分子量 扩散速率与分压差、温度、气体溶解度、扩散面积呈 正比;与扩散距离、分子量的平方根呈反比。 气体的溶解度/分子量的平方根之比为扩散系数。 扩散系数大,扩散速率快

1. David Company has the following information at the year-end for the preparation of adjusting entries: a. Of the $10000 balance in unearned revenue, $7000 has been earned. b. The annual building depreciation is $20000 C. Services provided to customers at the last day of the year unbilled totally 35000. d. Rent of 3000 for the Dec. is unpaid and unrecorded

1. The ownership structure of a business includes the following forms: A. Individual, group, corporate. B. Sole proprietorship, partnership, or corporation D. Debtors, creditors, and ownesancia C. Service, manufacturing, and financial. 2. Which of the following is NOT true concerning a sole proprietorship? A. A sole proprietorship is a company