【简答题】Match each word with its meaning.
【简答题】方向控制阀用于控制液压系统中液流的__________。
【简答题】Match each word with its definition
【简答题】Match each word with the right meaning
【简答题】Match each word with its meaning.
【判断题】方向控制阀用于控制液压系统中液流的方向和通断。( )
【简答题】Match each word with their Chinese meaning
【简答题】Match each word with their meaning
【简答题】方向控制阀用于控制液压系统中液流的________和________。