A.7440~11160r/min B.7400~11160r/min C.7404~11066r/min D.7400~10600r/min
A.阻止蒸汽外漏 B.平衡軸向推力 C.阻止空氣漏入汽缸
A.齒輪泵 B.螺桿泵 C.離心泵 D.柱塞泵