- 搜標(biāo)題
- 搜題干
- 搜選項(xiàng)
單項(xiàng)選擇題
液壓缸的功率總是小于液壓泵的輸出功率，故效率小于（）.
A.90%
B.85%
C.80%
D.1
A.90%
B.85%
C.80%
D.1
