消防水箱与生活水箱合用,水箱应储存()分钟消防用水量。...
Thursday, September 22, 2022
于防护热箱法来说,计量区域尺寸与试件厚度之比和防护区域宽度与试件厚度之比,受与()类似的原理所控制。...
Thursday, September 22, 2022
热流计是利用()和()的热流而产生温度差来测量通过试件的热流密度的装置。...
Thursday, September 22, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
标准型喷头无论是直立型还是下垂型安装,溅水盘距顶板最大距离为()mm。...
Saturday, September 17, 2022
Wednesday, January 10, 2024
单选题在铸件或锻件等未加工表面上安装螺栓时,需要有()A 垫片B 凸台或沉孔...
Thursday, January 18, 2024
Saturday, September 17, 2022
单选题气体的导热系数一般随着温度的升高而()A 上升;B 下降;C 不变;D 不确定。...
Tuesday, March 12, 2024
下列4种不同构造的外墙中,()适用于间歇性采暖的房间,且热稳定性较好。...
Wednesday, September 21, 2022
Tuesday, September 20, 2022
我国供电企业供电的额定频率为交流50Hz,低压供电为220/380V,高压供电为10kV,35kV,110kV,()kV...
Monday, September 19, 2022
建筑物夏季防热设计的有关要求,下列哪几项是正确的?()...
Thursday, September 22, 2022
各层工业建筑,高架库房内,水枪的充实水柱一般不应小于()。...
Saturday, September 17, 2022
Thursday, September 22, 2022
室外消火栓的数量应当按照室外消防用水量计算,每个消火栓的用水量为()L/s。...
Thursday, September 15, 2022
室内排水系统的特点有以下几点,但是其中()的叙述不妥。...
Saturday, September 17, 2022
电梯的技术性性能指标是电梯应达到的先进性、合理性和()。...
Wednesday, September 21, 2022
Thursday, September 22, 2022