萃取、冲洗和干燥:还没到结束不能算结束。藉由分液漏斗示 。 范液相-液相萃取并学习如何用”反应检查步骤”检查你的反应。这 是一个你不会想错失的一个纯化技巧! Extracting, Washing and Drying: It ain't over 'til it's over. Learn how to \work up\ your reaction using a separatory funnel to perform a liquid-liquid extraction. This is one purification technique you don't want to miss!

Solution General solution x(t)= A cos wnt +B sin wnt or, x(t)=Csin(wnt+φ) Initial conditions

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

1.试证明 Brent定理:令W(n)是某并行算法A在运行时间T(n)内所执行的运算数量, 则A使用p台处理器可在t(n)=((n)p+(n)时间内执行完毕

1.如果MW4中的数小于等于IW2中的数,令M0.1为1并保持, 反之将M0.1复位为0。设计语句表程序。 2.当10.1为ON时,定时器T32开始定时,产生每秒一次的周期脉 冲。T32每次定时时间到时调用一个子程序,在子程序中将模拟

外研版（三起）（2012）小学英语六年级下册Module 7 Unit 2 She couldn't see or hear.Module 7 Unit 2 She couldn't see or hear.课件(5)

1.液体的表面自由能Y可以表示为 (A)(a H/a) T.p, n (B)( F/a A) T, p, n (C) (a U/aA S, V, n (1) (a G/a).,n

1.物质的量为n的纯理想气体,该气体在如下的哪一组物理量确定之后,其它状态函数方有定值。 C(A)(B)(C) T,U(D) T, p

8.1 定时器0与定时器1的特性 8.2 与定时器0和定时器1相关的寄存器 8.3 T0和T1模块的电路结构与工作原理

第一节均数的抽样误差与标准误 第二节t分布 第三节总体均数的估计 第三节 总体均数的估计 第四节 t 检验和u检验 第五节 两均数的等效检验 第六节 假设检验的基本步骤 及注意事项 第七节 正态性检验 和两样本方差齐性检验