728、Solenoid valves shall be shown with a notation indicating whether the valve is spring-loaded to the
open or closed position. 电磁阀应该显示一个标记,表明阀门是弹簧加载到打开还是关闭位置。

547、Acetone is a heavy-duty degreaser suitable for metal preparation and removing grease from fabric
covering prior to doping.

546、MAKE SURE THAT THE RODS HAVE SUFFICIENT CLEARANCE.

545、对于所有飞机在起飞和飞行中(可能)发生的所有的发动机故障(包括部分失效),均应提供程序。

544、Each Handbook shall have an "Airplane Weighing Form" that includes an airplane side view showing the
location of weighing points ( ) relative to the datum line.
起落架)的位置。

543、The next check interval is based on the inspection results of this time

542、Correct punctuation is important because it shows how the different parts of the text are related and
prevents ambiguity.

541 、 utilizing an airplane as intended by the manufacturer, combined with sound inspection and
ice rain or a mixed conditions, may maintenance practices , forms the basis for assuring the airplane remains airworthy and safe to operate. 根
据制造商的意图使用飞机,结合良好的检查和维护实践,形成了确保飞机保持适航性和安全操作的基础。

540、包含大的过冷水滴,冻雨或混合情况的大气条件,可能超出 FAR 参数和认证的防冰系统能力。

539、Make an analysis of the oil.

538、不要使用笼统和含糊的动词。