What does the man sell A: Eggs. B: Coolers. C: Ice cream. D: Air conditioners.

Water-cooled oil coolers can be used in high-pressure applications such as those found in oil refineries and chemical processing plants.

Water-cooled oil coolers can be used in high-pressure applications<br/>such as those found in oil refineries and chemical processing plants.()

（） is used for cylinder and cylinder head， the salt water is used for cooling the lubricating oil， the fresh water in the coolers and the charging air in the air cooler.

Water-cooled oil coolers can be used in high-pressure applications such as those found in oil refineries and chemical processing plants. A: 正确 B: 错误

In the majority of lubricating oil systems for internal combustion engines, the external system includes such parts as _____, _____, _____, and _____. A: engine oil B: sumps C: oil pumps D: oil coolers