问题:控制器常用的控制规律有(),以及它们的组合控制规律,例PI.PD.PID等。A、比例控制B、积分控制C、微分控制D、串级控制...
Sunday, December 3, 2023
问题:有一台电子电位差计,已知量程为0~400℃(400℃时的热电偶热...
Saturday, September 17, 2022
问题:在逻辑电路中如果是用高电位代表状态“0”,用低电位代表“1”的逻...
Saturday, September 17, 2022
Thursday, December 7, 2023
Saturday, September 17, 2022
问题:电接点水位计引起电极损坏的原因是严重腐蚀导致瓷封件开裂泄漏。...
Saturday, April 27, 2024
问题:一块1.5级,量程为1mPa的压力表,经检定最大绝对误差为0.0...
Saturday, September 17, 2022
问题:调节阀的流量特性取决于()。A、介质特性B、阀芯形状C、流通能力D、调节阀的前后压差...
Friday, October 20, 2023
问题:钴-60的γ射线比铯-137的能量高,因此钴-60γ射线在仪表中...
Saturday, September 17, 2022
问题:试电笔一般检查的电压为()A、AC220—500VB、AC36—380VC、AC或DC55—500V...
Saturday, April 15, 2023
问题:用差压变送器测流量,差压ΔP=25kpa,二次表表程为0~200...
Saturday, September 17, 2022
问题:主蒸汽压力升高,汽温不变或汽压不变,汽温降低末几级叶片的蒸汽温度...
Saturday, September 17, 2022
Saturday, September 17, 2022
Saturday, September 17, 2022
Saturday, September 17, 2022
问题:为了提高热电偶测温精度,在使用时可以用延长偶丝来实现。...
Sunday, August 6, 2023
Saturday, September 17, 2022
问题:φ159×5的管子内流体的平均流速为2.5m/s,所以管道内的流...
Saturday, September 17, 2022
Saturday, September 17, 2022
Saturday, September 17, 2022