804.检查密封有无缺陷。

A. If your decision is not to change the unit,monitor its temperature at least 15 rotations.

B. If you decide not to renew the unit,supervise its temperature at least 15 periods.

C. If your decision is not to replace the unit,monitor its temperature for a minimum of 15 cycles.

A. Isolate the section that is causing the trouble.

B. Separate the part that is causing the fault.

C. Identify the part that is causing the error.

A. The parts must be assembled tightly.

B. Make sure that the parts are attached securely.

C. The parts must be assembled loosely.

A. 移除剩下的液体后向管子吹气。

B. 通过吹气向管子添加剩余的液体。

C. 通过向管子吹气移除剩下的液体。

A. The fire-proof materials and seals are mounted on or about the power unit.

B. The fire-resistant partitions and seals are mounted on the power unit.

C. The fire-resistant partitions and seals are mounted on or about the power package.

A. 接近和位置的说明会在这里给出不少信息。

B. 除非很困难,否则接近和位置的说明会在此给出。

C. 除非很明显,否则接近和位置的说明会在此给出。

A. 螺旋桨恒速机构故障。

B. 螺旋桨恒速机构被挡住了。

C. 螺旋桨恒速传动机构不在这个位置。

A. Make sure that the flaps are retracted and the aileron trim handwheel is in the zero position.

B. Ensure that the flaps are partially extended and the aileron trim handwheel is centered at zero.

C. Make sure that the flaps are raised and the aileron trim handwheel is set to non-zero position.

A. 大翼的主要结构框架包括梁、肋、桁条、燃油箱整体结构、翼尖油箱支撑结构和开口周围结构。

B. 大翼的主要框架包括隔框、肋、加强筋、内部燃油箱结构、翼尖油箱支撑结构和结构周围的开口。

C. 大翼的主要结构包括翼梁、隔框、肋条、内部燃油箱结构、翼尖油箱支撑结构和结构周围的开口。

D. C.大翼的主要结构包括翼梁、隔框、肋条、内部燃油箱结构、翼尖油箱支撑结构和结构周

E. C.大翼的主要结构包括翼梁、隔框、肋条、内部燃油箱结构、翼尖油箱支撑结构和结构周围的开口。

A. 对现有的分析进行了审查,以确定可能存在安全裕度较低的部件和区域。

B. 从分析结果发现,有部件和相关区域显示出安全性能较低的迹象。

C. 故障分析结果显示,某些部件和区域现有些安全指标达不到设计要求。