A.開門時(shí)間B.關(guān)門時(shí)間C.加速時(shí)間D.限位開關(guān)
A.乘數(shù)左移B.乘數(shù)右移C.被乘數(shù)左移D.被乘數(shù)右移
A.自動B.撥動C.雙穩(wěn)態(tài)D.點(diǎn)動