问题描述：
[单选]
The pressurized air is usually cooled to increase the charge air（）．
A．viscosity
B．density
C．velocity
D．electricity
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 primary duty of lube oil is to reduce（）between the working parts of an engine．
下一篇：The pressure of pilot air is usually（）than that of starting air．
- 我要回答: 网友(216.73.216.96)
- 热门题目: 1.高效废气锅炉与现代节能柴油机 2.低速柴油机排放污染物中，影响 3.废气锅炉烟垢着火危险的报警三