Sunday, September 11, 2022
问题:PS版润湿液中,改善印版润湿性的成分是()。A、柠檬酸B、磷酸C、桃胶D、表面活性剂...
Thursday, November 16, 2023
Tuesday, March 5, 2024
Friday, October 6, 2023
Sunday, April 14, 2024
Friday, December 15, 2023
问题:经过测量得到,原版上网点面积率是70%,印刷品上与原版对应的70%处的网点密度(DR)为0.66,实地密度(DV)为1.25,求该处的网点增大值。...
Sunday, April 14, 2024
问题:柔性版装版时,印版的弯曲变形量与()无关。A、印版厚度B、印版长度C、版材弹性模量D、印版滚筒半径...
Thursday, July 13, 2023
Wednesday, April 24, 2024
Sunday, June 18, 2023
Thursday, October 19, 2023
问题:在彩色印刷中,后一色油墨在前一色油墨膜层上的附着,叫做()。...
Thursday, November 16, 2023
Sunday, April 14, 2024
Friday, November 24, 2023
问题:润湿液的表面张力略大于油墨的表面张力,有利于实现水墨平衡。...
Sunday, April 14, 2024
Friday, October 13, 2023
问题:平版印刷过程中,橡皮布可能产生哪些主要的变形?对印刷质量有何影响?有什么防止的措施和方法?...
Thursday, October 27, 2022
问题:润湿液呈()。A、酸性B、中性C、碱性D、不确定...
Tuesday, February 21, 2023
Sunday, September 11, 2022
Friday, October 6, 2023