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单选题 What kind of test needs to be done for finished boots
学科：高分子材料专业英语（2024）
时间：2025-06-11 04:24:31
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题目1单选题
谁发明了天然橡胶的硫化工艺A. 保罗·弗洛里B. 查尔斯·固特异C. 约翰·费里D. 德热讷
题目2单选题
雨靴的衬里是of_________做的A. 自然气泡B. 涤纶纱C. 聚苯乙烯D. 聚氯乙烯
题目3单选题
雨靴的外部是由 _________A. 压 延B. 吹塑成型C. 注塑D. 挤压
题目4单选题
如何测量以确保合成橡胶熔化和流动良好A. 抗张强度B. 断裂伸长率C. 玻璃化转变温度D. 熔体流动指数
题目5单选题
成品靴子需要做什么样的测试A. 热稳定性B. 阻燃性C. 弯曲D. 冲击强度
题目6单选题
Who invented the vulcanization process for natural rubberA. Paul FloryB. Charles GoodyearC. John FerryD. de Gennes
题目7单选题
The lining of rain boots are made of_________A. natural bubberB. polyester yarnC. polystyreneD. PVC
题目8单选题
The outer part of rain boot was made by _________A. calenderingB. blow moldingC. injection moldingD. extrusion
题目9单选题
What is measured to make sure that the synthetic rubbers melt and flow wellA. tensile strengthB. enlongation to breakC. glass transition temperatureD. melt flow index
题目10单选题
What kind of test needs to be done for finished bootsA. thermal stabilityB. flame retardancyC. bendingD. impact strength
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