1223. The exhaust gas temperature indicator,on piston engine powered airplanes,is the instrument used to identify the lean fuel flow mixtures for various power settings( )

3077. 超过这个速度时不要收放起落架。 ( )

3076. If this maneuver cannot be performed safely, a warning against attempting it shall be provided ( )

3075. The example has short paragraphs , which give the text a clear structure and make it easy for the reader to understand( )

3074. You must use a respirator if the fuel-gas concentration in the work area is 5% more than the lower explosive limit ( )

3073. In extreme climates and low ambient temperatures , it may be difficult to lubricate the flap and slat systems correctly ( )

3072. The heat and sound insulation blankets are covered by lining and furnishing panels , which also provide cockpit decoration( )

3071. 所有相关数据应按逻辑方式分组。 ( )

3070. On pages requiring folding, the fold shall be made in a manner that permits the page number to be visible( )

3069. 对 2 号发动机进行大修。 ( )

3068. 在吊起齿轮箱之前组装好可移动的起重机。 ( )