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当前学科:外用膏剂
题目:
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吸湿性好,药物释放和渗透较快,与苯甲酸、鞣酸等混合时可使基质过度软化的是()
A . A.聚乙二醇
B . B.硅酮
C . C.凡士林
D . D.卡波姆
E . E.石蜡
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推荐知识点:
Estimating schedule activity costs involves developing an (1) of the cost of theresources needed to complete each schedule activity. Cost estimating includes identifying and considering various costing alternatives. for example, in most application areas, additionalwork during a design phase is widely held to have the potential for reducing the cost of the execution phase and product operations. the cost estimating process considers whether the expected savings can offset the cost of the additional design work. cost estimates are generally expressed in units of (2) to facilitate comparisons both within and across projects.the (3) describes important information about project requirement that is considered during cost estimating. 空白(1)处填() 空白(2)处填() 空白(3)处填()
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以聚乙二醇-400为固定液,对丁二烯原料进行气相色谱分析。已知原料中含水、甲醇、乙醛、乙醚、乙醇、1-丙醇,预测它们的出峰次序。已知它们的沸点分别为100OC、65OC、20.8OC、46OC、78.5OC、97.4OC、。
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间接碰撞