问题:一般传动系统都包括三个必要的环节:原动力、变速器、减速器。
Saturday, March 23, 2024
问题:螺杆中,逆流的方向正好与()反向。A、正流B、横流C、漏流D、倒流
Thursday, June 22, 2023
Thursday, June 15, 2023
问题:交联管加热段的鼓风机主要作用是在正常生产过程中,保持加热段温度均匀。
Sunday, April 14, 2024
问题:半悬链线式即为:加热段采用悬链线形式,而预冷段和冷却段采用直线形式。
Saturday, March 25, 2023
问题:对于型号YJV22表示铜芯交联聚乙烯绝缘钢带铠装聚氯乙烯护套电力电缆。
Friday, February 3, 2023
问题:过氧化物的分解温度既要高于其本身的熔点,又要高于聚乙烯的熔点。
Saturday, March 25, 2023
Friday, April 19, 2024
Sunday, October 1, 2023
Friday, June 16, 2023
Saturday, March 23, 2024
Friday, April 19, 2024
问题:交联温度和速度是工艺中两个重要参数,在保证产品具有优良的(),力求提高工艺线速度。A、机械、物理和电性能B、使用性能C、表现质量D、物理性能
Saturday, October 14, 2023
Friday, April 19, 2024
Wednesday, March 20, 2024
Saturday, June 17, 2023
Thursday, June 15, 2023
Tuesday, April 30, 2024
Saturday, June 17, 2023
问题:机头成型压力取决于机头的()和成型部分的长度。A、尺寸大小B、模套形状C、压缩比D、砂网目数
Thursday, June 15, 2023