问题描述：
[单选]
The main bearing shells are made of steel with a lining of bearing metal which may be white metal， copper-lead or aluminum-tin alloy What is the meaning of “which” in the sentence above？
A．main bearing shells
B．main bearing
C．steel
D．bearing metal
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 main bearing shells often have a thin（）of lead or indium to provide a layer giving protection against corrosion．
下一篇：The main bearing metal is a lining（）．
- 我要回答: 网友(216.73.216.29)
- 热门题目: 1.大量产品的故障率随时间变化的 2.由于船舶的特殊性，使动力装置 3.关于产品的维佟性，指出哪个是