1235、不要让压力小于(或大于)20psi。

A. 　 The manufacturer may establish procedures to provide drawback on unairworthy conditions.

B. 　 The manufacturer may establish procedures to provide response(反馈) on unairworthy conditions.

C. 　 The manufacturer may establish procedures to provide recall on unairworthy conditions.

A. 　 The lower seal appears as the lower bearing is pulled down.

B. 　 You can see the lower seal before pulling the lower bearing down.

C. 　 Only after you pull the lower seal down can you see the lower bearing.

A. 　 Check such system to determine the cause of interference.

B. 　 Examine part of the system to find the cause of the interference.

C. 　 Examine all of the system to find the cause of the interference.

A. 　在升降飞机时,要确保操作升降设备的人员接受过恰当的培训并具备相应的知识

B. 　在对飞机进行平衡、顶升或放下时,确保人员接受过升降设备的培训并掌握相关技能

C. 　当水平放置飞机或顶升飞机时,确保操作升降设备的人员学过培训知识

A. 　在此种情况下,文件的标题页和目录页必须遵循每一部分给出实际出版日期。

B. 　在此种情况下,文件每部分之前的标题页和目录页必须标明实际出版日期。

C. 　在此种情况下,标题和目录页要放在文档每个部分之前,并必须给出实际出版日期。

A. 　 Install the point tags on the negative overheat thermocouple of the turbine.

B. 　 install the terminal tags on the forward overheat thermocouple of the turbine

C. 　 Install the port tags on the rearward overheat thermocouple of the turbine.

A. 　 This documentary includes appropriate instructions for continuing airworthiness.

B. 　 This document contains appropriate instructions for continued airworthiness.

A. 　 The word list only shows major changes.

B. 　 The word list only shows minor changes.

C. 　 Only major changes are highlighted in the word list.

A. 　 There are electrically-operated valves in the injection lines to the two engine pumps.

B. 　 There are electronic-operated valves in the ejection lines to the two engine pumps.

C. 　 There are electrically- operated valves in the suction lines to the two engine pumps.

A. 　这种物质在高浓度时是有毒的。

B. 　在高度浓缩后,这种材料会有毒。

C. 　这种材料在高温下会易燃。