The ventilation system uses differential pressure to pull air out of the airplane. The air moves through overboard vents from the cabin galley and the lavatory areas.

A. The Abnormal Procedures Section shall include checklist of operation sequence indicating the result of important operations to ensure safety.

B. The Abnormal Procedures Section shall include a checklist as the attachment indicating the sequence of operations when safety is critical.

C. The Abnormal Procedures Section shall include, at the beginning, a check list with regard to order of action when sequence is essential to safety.

A. 每页底部应标明页码和发行日期或修订日期。

B. 每页都应有页码和日期或改版日期。

C. 每页都应有页码，并且日期或改版信息在底部。

A. Make sure that there is something in the pipe.

B. Make sure that there is nothing in the pipe.

C. Make sure that blockage is in the pipe.

A. 这个能使推力管理更好，并且能够减少燃油消耗。

B. 这个能使推力管理更好，并且能够减少燃油吸收。

C. 这个能使更好的推力被应用，并且能够减少燃油消耗。

A. 在前货舱尾部后壁板衬板后面装有两个空气循环过滤器。空气过滤器分别位于左右两侧混合总管湾区的过滤器壳体内。

B. 在前货舱尾部的壁板后面，有两个空气循环过滤器。它们分别安装在左右两侧的混合总管湾区。

C. 在前货舱的后部的衬板后面，装有两个空气过滤器。它们位于混合总管湾区左右两侧的空气滤芯盒内。

A. 装配之前，确保适当减少减震器里的压力。

B. 拆卸之前，确保释放减震器里的初始压力。

C. 分解之前，确保减震器里的所有氮气压力已释放。

A. All tabulations shall own a title in order.

B. All tables shall bear a title with a number.

C. All figures shall have a title with a number.

A. 描述飞机发动机时，提供如下必要信息： 1.制造商和型号 2.发动机类型、气缸数、压气机类型等 3.额定功率 4.额定发动机转速 5.齿轮减速器，如适用 6.正常安装的附件 7.涡轮增压器或其他增益 8.限制、警告或提示。

B. 描述飞机发动机时，提供如下必要信息： 1.制造商和型号 2.发动机类型、气瓶数、压气机类型等 3.功率评定 4.发动机转速等级 5.齿轮减速，如适用 6.附件正常安装 7.增压/涡轮增压或其他增强 8.限制、警告、提示。

C. 描述飞机发动机时，提供如下必要信息： 1.制造商和型号 2.发动机类型、气缸数、压气机类型等 3.额定功率 4.额定发动机速度 5.减速齿轮，如适用 6.附件的正常安装 7.增压/涡轮增压或其他增强 8.限制、警告、提示。

A. It is understood that compliance with the above can in some instances cause duplication of test procedures, which is acceptable.

B. It will lead to repeat the test process when you obey the regulations in some cases, it is barely to be accepted.

C. It is understood that follow the above regulations may cause repeating in the test procedures , although it is allowable.

A. NOTE: This tryout is to make sure that the flap position indicating system is in a zero energy state.

B. NOTE: This test is to make sure that the flap position indicating system is in a zero condition.

C. CAUTION: This test is to make sure that the flap position indicating system is in a zero condition.