Get a sample of the fuel and measure its specific gravity.

A. For inspections, repair and overhaul of the aircraft and its systems and units, those producers recommended time limits and life of parts if possible.

B. Those manufacturers recommended time limits for inspections, maintenance and overhaul of the aircraft, its systems and units, and life of parts, as applicable.

C. Those manufacturers gave time restrictions to inspect, repair and maintenance the aircraft, its systems and units, and according to the situation they gave the life of parts .

A. The testing machine will run the tests in manual mode.

B. The test set will automatically run the tests.

C. The test apparatus will give the test parameter automatically.

A. Pilot reports on flight logbook of 908701 pages fluttering sound from left side of airplane during descend beginning at 11000 feet.

B. Pilot reports trembling sound from left side of airplane during ascend at 11000 feet on flight logbook 908701 page.

C. Pilot reports on flight logbook page 908701 fluttering sound from left side of airplane during descend beginning at 11000 feet.

A. 从主快速断开装置到发动机的系统部分，能够将燃油分配到发动机燃烧室和加力燃烧室。该部分包括管路、泵、温度调节器、阀门、油滤、总管、喷嘴等。不包括主燃烧室或加力燃烧室控制装置。

B. 从主快速断开装置到发动机的系统部分，将燃料分配到发动机燃烧器部分和推力增强器，包括泵、温度调节器、阀门、过滤器、歧管、喷嘴等。不包括推力增强器燃料控制。

C. 从主快速断开装置到发动机的系统部分，将燃料分配到发动机燃烧器部分和推力增强器，包括泵、泵、温度调节器、阀门、过滤器、歧管、喷嘴等。包括主或推力增强器燃料控制。

A. 确保能用耳机听到飞行语音记录。

B. 确保能通过耳机与客舱进行对话。

C. 确保能在耳机里听到驾驶舱的对话。

A. You must obtain medical help as soon as you can.

B. You must obtain medical help as more as you can.

C. You must obtain medical instructions as soon as you can.

A. Count the velocity in the circuit.

B. Compute the current in the route.

C. Calculate the voltage in the circuit.

A. Some aircraft parts are combined materials.

B. Some airplane structures are composite materials.

C. Some aircraft structures are compound materials.

A. 对涡轮发动机来说，排气系统包括发动机本体以外的部件。

B. 对涡轮发动机来说，排气系统包括发动机主系统内的装置。

C. 对涡轮发动机来说，排气系统不包括发动机主系统以外的装置。

A. Those instructions necessary to park or store the aircraft in normal or abnormal conditions such as with engines removed, aircraft damaged, etc.neither short-term nor long-term.

B. Instructions required for parking or storing the aircraft under normal or abnormal conditions, such as engine removal, aircraft damage, etc., which are used for short-term or long-term under extreme weather conditions.

C. Those instructions necessary to park or store the aircraft in normal or abnormal conditions such as with engines removed, aircraft damaged, etc.either short-term or long-term.