2078. 在此期间使用经济型功率设置可能会对发动机的寿命有损

A. 需每隔一年就清理一下过滤器。

B. 有必要持续清理过滤器。

C. 有必要定期清理过滤器。

A. Make an enter in the logbook to show that you did the deactivation procedure.

B. Make an entry in the logbook to show that you did the deactivation procedure.

C. Make an entrance in the logbook to show that you did the activation procedure.

A. 系统中向座舱提供冷却空气的部分及其控制装置。包括冷却装置、与冷却器操作相关的指示系统等,如适用。不包括温度控制和指示系统。

B. 系统中向座舱提供加热空气的部分及其控制装置。包括冷却装置、与控温器操作相关的指示系统等,如适用。不包括温度控制和指示系统。

C. 系统中向驾驶舱提供制冷空气的部分及其控制装置。包括冷却装置、与冷却器操作相关的指示系统等,如适用。不包括调温控制和指示系统。

A. Soak the element for two hours.

B. Wet the element for two hours.

C. Stove the element for two hours.

A. 甲醇.....

B. 乙醇.....

C. 丙醇......

A. The right backup generator is always used prior to the left generator.

B. The left backup generator is primarily used.The right generator takes over if the left one fails.

C. The right backup generator is primarily used.The left generator takes over if the right one fails.

A. 如果超过50%的污染物造成孔堵塞,则要清理显示组件背面的孔。

B. 如果污染物造成孔堵塞超过50%,就要清洁显示组件后面的孔。

C. 如果50%的孔被污染物堵塞,则要清理显示组件底部的孔。

A. To get more fuel, we need more oil.

B. Get more fuel to get more drag.

C. We need more fuel in order to get more thrust.

A. That portion of the system which controls the output of the communications and navigation transponder into the flight crew headphones and speakers, and the output of the flight crew microphones into the communications transmitters.

B. That portion of the system which controls the output of the communications and navigation receivers into the flight crew headphones and speakers, and the output of the flight crew microphones into the communications transmitters.

C. That portion of the system which controls the output of the communications and navigation transmitter into the flight crew headphones and speakers, and the output of the flight crew microphones into the communications transmitters.

A. 从地面到翼底部的高度可以改变;

B. 从翼的底部到顶部的高度可以改变;

C. 从地面到翼顶部的高度可以改变;