Sunday, September 11, 2022
问题:电化学腐蚀的基本过程包括()。A、阳极过程B、阴极过程C、电流的流动D、以上三者缺一不可...
Tuesday, November 28, 2023
Friday, February 23, 2024
问题:在石油沥青防腐中,管外径630~720mm时,玻璃布宽度为()。A、>600mmB、500~600mmC、400~500mmD、300~400mm...
Saturday, April 6, 2024
问题:刷涂顺序应该先上后下、先左后右、先内后外、()地分段进行。...
Saturday, September 10, 2022
问题:延伸度可反映沥青的()。A、塑性B、热稳定性C、抗冲击性能D、化学稳定性...
Saturday, October 14, 2023
问题:软化点的单位是()。A、℃B、cmC、1/10mmD、cm...
Saturday, January 28, 2023
问题:贮油罐内壁除锈后,经检查合格后,每()之内涂一遍底漆。...
Sunday, September 11, 2022
Sunday, September 11, 2022
问题:石油沥青防腐中,底漆厚度为()。A、0.1~0.2mmB、0.2~0.3mmC、0.3~0.4mmD、0.4~0.5mm...
Wednesday, October 18, 2023
Monday, January 29, 2024
问题:人体两处同时触及两相带电体的触电事故叫()。A、单相触电B、两相触电C、三相触电D、跨步电压触电...
Friday, February 23, 2024
问题:聚氨酯涂料用在钢铁上,其附着性略()环氧粉末涂层。...
Wednesday, October 18, 2023
问题:在对钢管进行喷涂内减阻涂料时,提高喷涂压力,涂膜厚度变化()。...
Saturday, September 10, 2022
Wednesday, December 20, 2023
问题:无损测厚仪测厚时,对每根管子必须测出()个数值。A、4B、8C、12D、16...
Tuesday, November 28, 2023
Sunday, September 11, 2022
问题:软化点的单位是()。A、℃B、cmC、1/10mmD、cm...
Saturday, January 28, 2023
问题:依据SY/T0413规定,厚度3.5mm的D813规格钢管3PE普通级防腐管,冲击强度设定为()。...
Thursday, October 20, 2022
问题:“一步法”成型聚氨酯泡沫保温管至少应配有()套施工机具。...
Sunday, September 11, 2022