Around the combustion chamber, all the main components are to give low thermal strains and the smallest, circumferentially symmetric deformations for good sealing between piston rings and liner（）

Top piston rings are plasma coatedIt gives added safety...

单项选择题Top piston rings are plasma coatedIt gives added safety for the of new lines（）

For auxiliary engines the permissible overload is （） fo...

单项选择题For auxiliary engines the permissible overload is （） for one hour every twelve hours.

The scavenge air receiver is of a simplified and modula...

单项选择题The scavenge air receiver is of a simplified and modular design with integral non-return flaps, hanging cooler and two auxiliary air blowers（）