Sunday, September 11, 2022
问题:电动机铭牌上写着温升60℃即是说电动机定子绕组的温度不应超过()...
Friday, September 16, 2022
Friday, September 16, 2022
Sunday, September 11, 2022
问题:压力钢管的布置形式虽有不同,但在结构上都是由上弯管、斜管(或竖井...
Friday, September 16, 2022
问题:渠道滑坡变形检测的主要工作有滑坡位移观测、滑坡阻力观测、渠道水位观测。...
Sunday, February 25, 2024
问题:沥青混凝土防渗层,()mm的贯穿性裂缝,可用喷灯或红外线加热器加...
Sunday, September 11, 2022
问题:采用爆破法开挖渠道,当渠底宽度比深度大()以上时,应布置2~3排...
Sunday, September 11, 2022
问题:钢丝的磨损或腐蚀程度达到或低于钢丝直径40%时即应报废。...
Sunday, September 11, 2022
问题:马尾松毛虫防治方法:通过营造针阔叶混交林,合理密植,保持林分郁闭...
Friday, September 16, 2022
Friday, September 16, 2022
问题:接地线在日常维护时,要用接地电阻测试仪遥测防雷接地电阻是否在()Ω以下。A、4B、8C、10D、12...
Thursday, November 24, 2022
Friday, September 16, 2022
问题:渠道每段的挖、填方量可根据每段断面挖(填)面积乘以每段长度即为每段渠道土方量。...
Tuesday, December 12, 2023
Friday, September 16, 2022
问题:堵塞封闭裂缝采用砂浆沿裂缝滴入,缝隙填满后,应用铁铲()依次塞缝...
Sunday, September 11, 2022
Sunday, September 11, 2022
问题:在涂料保护中,为了保证保护效果,涂料要有一定的厚度,一般都要涂刷...
Sunday, September 11, 2022
问题:山坡稳定性评价方法主要有()等人为因素均可促使边坡失稳。...
Friday, September 16, 2022
问题:南方地区温暖多雨,宜在冬初树木停土生长后至翌春发芽前植树造林。...
Sunday, September 11, 2022