正确答案: D

Ⅰ＋Ⅲ＋Ⅴ

题目：强化气缸套内圆表面的方法主要有（）等工艺，使表面耐磨性、抗咬合性提高来防止拉缸事故。Ⅰ.松孔镀铬；Ⅱ.镀铁；Ⅲ.离子氮化；Ⅳ.硬质镀铬；Ⅴ.喷钼。

查看原题 查看所有试题

学习资料的答案和解析：

[单选题]关于产品的维佟性，指出哪个是错误的表述（）。

产品的维修度高，则降低了船舶动力装置的可靠性

[单选题]After the ship is out of the harbour and in “Full Speed”, well change （）.

to fuel oil instead of diesel oil

[单选题]Which of the following conditions can cause above normal air temperature to develop in the intake manifold of a four-stroke/cycle turbo-charged diesel engine?（）

A defective after-cooler

[单选题]In a diesel engine cooling water system, a pH of 60 indicates a/an （）.

slightly acidic condition