核心课程，综合课程的优点与不足分别是什么？
当工艺管道内可能产生爆炸和燃烧的介质密度大于空气时，仪表管线应在工艺管架（）位置。 ["上方","平行","下方","任意"]
简述毛泽东领导的湘赣边界秋收起义的特点。
Of the three branches of phonetics, the longest established, and until recently the most highly developed, is（）phonetics. ["auditory","acoustic","articulatory","none of the above three"]
功率变送器不仅能测量功率的大小，而且还能反应功率的方向。
幼小衔接
