【判断题】将液力变矩器侧立,顺时针转动时单向离合器应锁止。
【单选题】My father served in the army in when he was in .
B.
the 1950s; his twenties
C.
the 1950s; the twenties
【单选题】Cookie对象的默认生命周期有多长?( )
【简答题】离心压缩机的转子为什么要做静平衡和动平衡检查?
【判断题】位置开关是一种将机械位置信号转换为电信号,以此控制运动部位位置或行程的自动控制电器。
【简答题】My father served in the army in ______ when he was in ______.A. 1970’s; twenties B. the 1970’s; his twenties C. the 1970’s; the twenties D. 1970’s; the twenties
【单选题】My father served in the army in _______ when he was in _____.
B.
the 1950s; his twenties