【单选题】调度人员在营运现场应随时根据 ____ 变化来调节运能?
【单选题】Which of the following transactions has no effect on stockholders' equity?______.
C.
Purchase of supplies on credit
D.
Sale of service on account
【判断题】非承载式车身施加于汽车上的力基本上都由车架来承受。( )
【单选题】体积的大小和()被人们认为是非任意性不对称现象中最重要的形式。