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1）s平面上围线映射； 2）Nyquist稳定性判据 ； 3）相对稳定性和Nyquist稳定性判据 ； 4）在频域中规定的时域性能判据； 5）系统带宽； 6）时延系统的稳定性； 7）频域中的PID控制器； 8) Matlab仿真

1.(20分) t=0时,描写氢原子中的电子的波函数为 R3Yi R2(+o) L3 其中R为径向波函数,为球谐函数.求 (a)该电子的能量E,角动量平方2,角动量分量L2和自旋z分量s2的可 能值及相应几率

复旦大学99年微生物学试题 1.名词解释(30分) （ 1) Koch's postulates （ 2) negative stains （ 3) RC(respiratory chain) （ 4) stationary phase （ 5) semi-synthetic antibiotics （ 6) cxtrcmophiles( extremc-microorganisms) （ 7) heteroiactic fermeniation （ 8)biomass （ 9)McAb(monoclonal antibody)

第八章碳杂重键的亲核加成 一、包括C=O、C=N、C≡N的碳杂重键化合物是极为重要的一大类有机化合物,亲核加成是碳杂重键的主要反应,也是重要的有机反应,其中尤以C=键的亲核加成最为重要。 二、亲核试剂主要有:(1)亲核中心为N、O、S、等的杂原子亲核试剂;(2)负碳亲核试剂;(3)H亲核试剂

Ⅱ. Listening skills W: How much money is the rent for an apartment in this neighborhood M: Your rent should be about a quarter of that Q How much should be the woman's rent be? 2. M: I paid $3, 500 for this digital camera. It was on sale at a 30$ discount w: Its a real bargain

Uint I. Basic listening practice 1. Script M: Now we have satellite and high-powered microscope, it s easy to think we know everything about the world; but we still dont understand EI Nino W: Right. Scientists all over the world over are even uncertain about the cause of the warm Pacific current that brings storms or drought-the mysterious EI Nino

Basic listening Practice 1. Script W: Let me recommend my brother to you. He's really done well in the stock market over the last M: The real question is this: How have you dine by taking his advice Q: What does the man mean?

一、填空题(每空1分,共20分) 1.不包含任何字符(长度为0)的串称为空串由一个或多个空格(仅由空格符)组成的串称为空白串。 2.设S=“A;document/mary.doc,则 strlen)=20的字符定位的位置为3

1.18℃时在厚度为1cm的惰性多孔平板两边,放置扩散系数为 119×10-9m2.s-1的NaCl稀水溶液,一边浓度为04 mol- dm-3,另一边 为02mol·dm-3。由于溶液量大,且一直在搅拌,浓度不变,扩散呈恒 稳状态。试求溶质Nal的物质通量,并写出NaCl的浓度在板内分布 的式子