凡遇列车中某一车辆制动机发生故障,不能及时修复或因车辆装载的货物规定需停止使用该车制动机等情况时,可以关闭( ),同时拉动缓解阀。P131T536 A. 折角塞门 B. 排风塞门 C. 截断塞门 一辆车的(A),就是在制动管一定的减压速度下经过一定的时间或一定的减压量,制动机必须发生制动作用。P140T549 A.制动灵敏度 B.缓解灵敏度 C.稳定性
【单选题】A patient had a sudden heart attack caused by inadequate blood flow through the vessels of the heart. As a consequence, there was an inadequate supply of oxygen to generate ATP in his cardiomyocytes. ...