Thursday, September 22, 2022
试验室每一台仪器设备都应有明显的标识来表明其状态,通常仪器设备采用三色管理,()表示合格证、()表示准用证、()表示停用...
Thursday, September 15, 2022
填空题耐久性混凝土中,配置强度等级C50及以上预应力混凝土时,骨料最大公称粒径不应大于()。...
Thursday, June 8, 2023
Saturday, September 17, 2022
判断题实验室间比对和能力验证不能作为量值溯源的依据。A 对B 错...
Friday, April 5, 2024
Thursday, September 22, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
Monday, September 19, 2022
单选题牌号为HRB335的热轧带肋钢筋抗拉强度不小于()A 390MpaB 410MpaC 455MpaD 510Mpa...
Thursday, November 30, 2023
Thursday, September 22, 2022
Thursday, September 22, 2022
单选题近似数1.6,2.424,4.2551相加的结果是()。A 8.28B 8.3C 8.2791...
Thursday, November 9, 2023
外加剂应采用减水率高、坍落度损失小、引气量大、能明显提高混凝土耐久性且质量稳定的产品。...
Thursday, September 15, 2022
填空题混凝土的稠度一般以坍落度表示,精确到();当坍落度大于220mm时以()表示,当坍落度小于1cm时,以()表示。...
Thursday, January 25, 2024