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全部科目 > 水路交通运输技能考试 > 海船船员考试 > 船舶管理(轮机专业) > 轮机英语 > 船舶电气与船舶安全

单项选择题

The top piston ring is plasma coated to give the lowest wear rate to reach the goal of two-years’ with sufficient margin（）

A.TBO
B.CEO
C.CFO
D.MCR

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单项选择题
Around the combustion chamber, all the main components are bore cooled to give low strains and the smallest, circumferentially symmetric deformations for good sealing between piston rings and liner（）

A.thermal
B.mechanical
C.plastic
D.elastic
单项选择题
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（）

A.drill cooled
B.hole cooled
C.tube cooled
D.bore cooled
单项选择题
Top piston rings are plasma coatedIt gives added safety for the of new lines（）

A.running-in
B.running-out
C.running on
D.running down
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