— I didn’t do well in the exam. What about you? — I did _____ you. Maybe even worse.
A.
not better than
B.
not worse than
C.
as well as
D.
no better than
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【简答题】如图6-19所示的平衡回路中,若液压缸无杆腔面积为A 1 =80×10 -4 m 2 ,有杆腔面积A 2 =40×10 -4 m 2 ,活塞与运动部件自重G=6000N,运动时活塞上的摩擦力为F f =2000N,向下运动时要克服负载阻力为F L =24000N,试问顺序阀和溢流阀的最小调整压力应各为多少?