A.60 B.80 C.100 D.120
A.10 B.13 C.15 D.18
A.液壓油缸 B.壓縮風(fēng)氣缸 C.電機(jī) D.油馬達(dá)
A.92% B.93% C.95.5% D.98%
A.≥93% B.≥94% C.≥80% D.99.30%