812、The properties of these sealants prevent corrosion.

738 Make sure that the rate of supply of fuel from the wing tanks to the center tank is equal.

736 A dedicated tool is necessary for the installation of the unit.

735 This category of technical verbs is only for descriptive texts such as general information,system description and operation texts,and the descriptive parts of service bulletins.

734 In designing schematic diagrams,it may be necessary to compromise between detail that is necessary to make the diagram self-explanatory,and simplicity that is essential for ease of reading and understanding.

733 To prevent damage to the engine,immediately install protective covers on all openings.

732 确保罗盘系统1和罗盘系统2是同步的。

731 The subject matter,including optional information,of this section of the handbook shall conform to the following general order of presentation unless a different order is more suitable for a particular airplane.

730 根据制造商的选择,静压系统的描述和讨论可以结合第7.49段的皮托管压力系统。

729 Make sure that there is tension in the lockwire.

728 丰B从 Identify the component with a code to help you to install it again correctly.