【简答题】在图6-60所示回路中,已知两活塞向右运动时缸Ⅰ的负载压力为2.5MPa,缸Ⅱ的负载压力为0.5MPa,负载为阻力负载。如顺序阀、减压阀和溢流阀的调整压力分别为p X =3.5MPa、p J =2MPa和p Y =4.5MPa,三种压力阀全开时的压力损失各为0.2MPa,其他阀处的损失可忽略不计。试说明图示状态下两液压缸的动作顺序,并说明A、B、C、D四点处的压力变化情况。
【简答题】List as many examples of these constituents as you can identify in sentences(a)and(b) below: NP, PP, VP. List as many examples of these lexical categories as you can identify in sentences(a)and(b): N,...