The phasor diagram is a name given to a sketch in the complex plane of the phasor voltages and currents throughout a specific circuit

烯烃与卡宾的反应

Liquid-liquid extraction is a unit operation frequently employed in the pharmaceutical industry, as in many others, for recovery and purification of a desired ingredient from the solution in which it was prepared. Extraction may also be used to remove impurities from a feed stream

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II. Review: Have a dictation of the new words in Unit 8 Section A: formal/informal, elementary, specialize, confine, occupation, render, preferable, resident, civilization, incredible, contribution, wisdom, accumulate distinguish

1.某温度时,NH4C(s)分解压力是标准压力,则分解反应的平衡常数K为: C(A)1(B)1/2(C)1/4(D)1/8

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Text A In the jungle Objectives Discussion Background Structure Study Lanquage Points Content Questions

一、选择题 1．（A） 2．（D） 3．（A） 4．（B） 5．（B） 6．（B） 7．（B） 8．（C） 9．（C）