问题描述：
[单选]
The lower section of a piston is called the（）．
A．land
B．skirt
C．crown
D．plate
参考答案：查看无
答案解析：无
☆收藏
答案解析：无
☆收藏
上一篇：A change in the degree of fuel atomization in a diesel engine would most greatly affect（）．
下一篇：The diesel engine valve subjected to most severe conditions of service is the（）．
- 我要回答: 网友(216.73.216.168)
- 热门题目: 1.当测得臂距差Δ⊥＞0时，可判 2.曲轴的臂距差对应着曲柄的变形 3.某曲柄的两主轴承在水平平面内