1166. Repair the surfaces that have scratches

修复所有凹坑的表面。

修复有腐蚀的表面。

修复有划痕的表面。

正确答案：C

设备系统操作理论翻译

扫码进入小程序
随时随地练习

2197. Make sure that the bogie rollers are aligned with the notches in the track

2196. 操作调光器电门确保光强发生变化

2195. 检查排水孔周围有没有腐蚀迹象。

2194. MAKE SURE THAT THE SPEEDBRAKE RETRACTS IMMEDIATELY

2193. It is( )install more than two washers for each bolt

2192. If you do not do this at the same time,the alignment pins will get caught

2191. In the case of a revision to an illustration,a black vertical line or a black hand may be utilized to call attention to the changed portion

2190. 清洁涂抹密封胶的区域

2189. 铝合金又轻又坚固, 所以广泛地应用于飞机制造工业中。

2188. Apply force of 100N on the end of the lever