盥洗室烟雾探测器位于各盥洗室抽气管道中。
R22制冷系统高压侧的气密性试验压力为()Mpa。 ["1.0","1.2","1.6","1.8"]
若已知两点的坐标分别为:A(412.09,594.83)m,B(371.81,525.50)m,则A到B的坐标方位角为()。 ["59°50′38″","239°50′38″","149°50′38″","329°50′38″"]
调节阀头与旁通管及其阀门外壁方向的净距应不小于()mm。 ["200","250","300","350"]
鼓风机+抽气按钮处于超控位时,从哪里引气通风?() ["进气活门","蒙皮热交换器旁通活门","空调进气活门"]
如何防止高压洗涤器防爆空间防爆板压破?