问题描述：
[单选]
Generating tubes in waste heat boilers are finned to（）．
A．reduce gas flow turbulence
B．prevent exhaust gas corrosion
C．increase the rate of combustion
D．increase the rate of heat transfer
参考答案：查看无
答案解析：无
☆收藏
答案解析：无
☆收藏
上一篇：Diesel engine main and connecting rod precision bearings are made in halvesEach half exceeds one-half the bearing circumference by a small amountThe small amount is termed（）．
下一篇：Directional intake ports in diesel engines are used to（）．
- 我要回答: 网友(216.73.216.96)
- 热门题目: 1.当气缸套工作表面有轻微的拉痕 2.在使用样板和专用内径千分尺测 3.衡量气缸套内圆表面磨损的指标