问题描述：
[单选]
The cross-head shoes are white metal lined， grooves being cut horizontally on the face of the white metal to ensure（）．
A．an adequate supply of lube oil
B．an adequate supply of fuel oil
C．an adequate supply of turbine oil
D．an adequate supply of cylinder oil
参考答案：查看无
答案解析：无
☆收藏
答案解析：无
☆收藏
上一篇：The cylinder and piston must be warmed up（）to a temperature of about 140 degF in standing by engine．
下一篇：The cross-head shoes are white metal（）．
- 我要回答: 网友(3.144.82.70)
- 热门题目: 1.可靠性在船舶动力装置质量指标 2.船舶每海里燃油消耗量指标考虑 3.已知某船排水量为2OOO0t