250.所有的修改都要得到设计部门的批准。

522.Turn the knob to make the display go out of view.

521.Distances shown are based on zero wind.

520.GET ( ) TO THE ACCUMULATOR FOR THE No. 1 HYDRAULIC SYSTEM.

519.把温度计校正到摄氏刻度。

518.All range distances shall be expressed in nautical miles

517.IF YOU PULL THE EJECTION SEAT HANDLE, THE SEAT WILL ( ).

516.这种材料接触热表面时会释放出危险的气体。

515.为了便于阅读和交叉参考,如果可行的话、插图、图形和表格应以垂直布
局显示

514.Units of measurements shown in manual must be consistent where
practical.

513.MAKE SURE THAT THE SPEEDBRAKE RETRACTS IMMEDIATELY.