A、 It is possible to mix appropriate engine oils agreed by engineers .But we suggest that you use the identical oil agreed by the same manufacturer.
B、 It is possible to mix approved engine oils. But we recommend that you use the same approved oil from the same manufacturer.
C、 It is possible to mix engine oils authorized by the same manufacturer. But we suggest you use the same oils authorized by the engineers.
答案：B
A、 It is possible to mix appropriate engine oils agreed by engineers .But we suggest that you use the identical oil agreed by the same manufacturer.
B、 It is possible to mix approved engine oils. But we recommend that you use the same approved oil from the same manufacturer.
C、 It is possible to mix engine oils authorized by the same manufacturer. But we suggest you use the same oils authorized by the engineers.
答案：B
A. Exhale into the oxygen mask.
B. Breathe into the oxygen mask.
C. Breathe into the gas mask.
A. 补充空气是系统的一部分，它改变和控制流入排气系统的补充空气流量。
B. 辅助空气是系统变化的一部分，它可以控制补充空气的排气量。
C. 补充空气是系统中变化和控制的部分系统，补充空气流向排气系统。
A. The main gear leg could be held by the side stay.
B. The main gear leg could be hampered by the side stay.
C. The main gear leg could be contained by the side stay.
A. 发动机压缩机控制系统包括调速器、活门、作动器、杠杆等装置，可控制发动机里的空气流量和加速可变定子叶片的运行。
B. 发动机压气机控制系统可增加通过发动机的空气流量,部件包括调节器、活门、作动器、连杆等。
C. 发动机压气机控制系统能控制通过发动机的空气流量和可调静子叶片的操作。该系统包括调节器、活门、作动筒、连杆等部件。
A. Continuing Airworthiness Programs may be prepared according to the related Federal Aviation Regulations for all types of general aviation airplanes and components.
B. All types of general aviation airplanes and components are certified by the applicable Federal Aviation Regulations which require the preparation of Continuing Airworthiness Programs.
C. Continuing Airworthiness Programs may be prepared for all types of general aviation airplanes and components certificated under the applicable Federal Aviation Regulations.
A. This section of the Pilot＇s Operating Handbook shall contain only those limitations required by regulation or necessary for safe operation of the airplane and approved by the regulatory authority.
B. This section of the Pilot＇s Operating Handbook shall include only those restrictions required by the regulations and those restrictions issued by the regulatory authority to ensure the safe operation of the airplane.
C. This section of the Pilot＇s Operating Handbook shall contain the regulatory requirements approved by the authorities and publish the necessary restrictions only for the safe operation of the airplane.
A. 发动机滑油携带这些微粒，直到它们被油滤捕获。
B. 直到颗粒被滤芯过滤，发动机滑油才能将它们带走。
C. 发动机滑油将这些污染物带至滑油滤芯。
A. Propellers must be overhauled in a satisfactory shop which should be supplied by the propeller manufacturer in accordance with data.
B. Overhaul of propellers and the shop must meet the data of the propeller manufacturer.
C. Overhaul of propellers must be accomplished in a qualified shop in accordance with data supplied by the propeller manufacturer.
A. 如果故障频繁出现，进行系统测试。
B. 如果故障定期出现，进行系统测试。
C. 如果故障随机出现，进行操作测试。
A. 用彩笔涂颜料。
B. 用刷子搅拌油漆。
C. 用刷子涂油漆。
