Please apply penetrating oil，If you cannot remove a bolt because of corrosion.

A. 安装此组件需要专用工具。

B. 对于安装此组件来说批准的工具是必须的。

C. 专业工具对安装此组件是无所谓的。

A. One of the safety precautions is to keep the combustible material from the work area at distance of 50ft at least.

B. One of the safety precautions is to keep the flammable material from the work area at distance of 50ft at least.

C. One of the safety precautions is to keep the combustible material from the work area at a minimum distance of 50ft.

A. A mixture of fuel and oxygen can cause an explosion.

B. Fuel and oxygen react with each other to cause explosion.

C. A mixture of fluid and oxygen can be set on fire.

A. 拆下并且标识预处理的包装。

B. 拆下并且丢弃预处理的组件。

C. 拆下并且丢弃预成型的封圈。

A. 标准化将通过对根据本规范制定的持续适航程序中所包含的检查要求的统一解释来提高安全性。

B. 标准化通过统一检查包含在持续适航程序中准备的相应规范来增强安全性。

C. 通过对符合本规范的持续适航程序中的检查要求进行一致性验证，标准化将提高安全性。

A. 防腐剂可能存在于腐蚀严重的部位。

B. 腐蚀敏感的部位可以安装防腐组件。

C. 易受腐蚀的部位可能有防腐剂。

A. Find the related EICAS status message which present with the maintenance information .

B. Find the correlated maintenance message that shows with the EICAS status message.

C. Find the applicable maintenance message displaying with the EICAS status message.

A. Detach the connection of the valve in the direction opposite to the flow.

B. Detach the connection of the upstream valve.

C. Detach the connection of the valve in the direction identical to the flow.

A. 使用多余的清洁剂清洁该区域。

B. 清除该区域多余的密封胶。

C. 在该区域内清理有害的密封剂。

A. Light surface blooming, which can occur on items in storage, is not detrimental to the component.

B. Surface blooming, often found on corroded items, has little adverse effect on the component when it is mild.

C. Items in storage tend to have surface blooming which is beneficial to the component.