After ensuring that the （） is correct the bearing clearanc

【名词&注释】

舵系中心线、中心线位置

[单选题]After ensuring that the （） is correct the bearing clearance should be checked.

A. nap
B. gap
C. nip
D. deflectio

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学习资料：

[单选题]舵系校中检测的项目中（）是错误的。

A. 舵系固定件的同轴度检验
B. 舵系运动件的同轴度检验
C. 舵系中心线与轴系中心线的同轴度检验
D. 舵系中心线与轴系中心线位置度检验

[单选题]A variable pitch propeller is made （） a boss with separate blades mounted into it.

A. of
B. up of
C. from
D. out

[单选题]The carbon deposits on the piston crown and in the ring grooves （）.

A. should be scraped
B. should be derusted
C. should be drilled out
D. to be brushed off

[单选题]The cylinder head, cylinder liner and （） form the combustion chamber.

A. frame
B. piston
C. crankcase
D. explosion plate

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