Sunday, September 11, 2022
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
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
Friday, September 16, 2022
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
Wednesday, March 29, 2023
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
按土坝裂缝走向与坝轴线平行或接近平行,多出现在坝顶及坝顶上部,也...
Sunday, September 11, 2022
Sunday, September 11, 2022
Sunday, September 11, 2022
不能使用橡胶止水带得情况有()。A、止水带受强烈的氧化作用B、温度超过70℃时C、受油类等有机溶剂腐蚀时D、环境湿度较大...
Thursday, December 14, 2023
环氧玻璃钢密度为(),由于抗拉强度高,因而能以较小的单位重量获得...
Sunday, September 11, 2022
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
Sunday, September 11, 2022
Friday, September 16, 2022
管道疏通器是一种电动工具,由一台电动机和一盘软轴组成。...
Sunday, September 11, 2022
Friday, September 16, 2022
施工时,先在槽内刷一层(),然后将沥青砂浆倒入槽内,立即用专用工...
Sunday, September 11, 2022
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
Friday, September 16, 2022