单选题 In the description of the airplane's Engine, any gear reduction system in the engine shall be described.

A、描述飞机发动机时,应描述发动机中的任何齿轮减速系统.

B、描述飞机发动机时,应描述发动机中的任何机械减速系统.

C、描述飞机发动机时,应描述发动机中的任何齿轮降低系统.

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相关试题

单选题确保驾驶舱头顶板上的探头加温电门放在自动位，所有的加温灯点亮。

A、In flight deck, once you set probe heater switches on the overhead panel automatically, all the heater lights flash.

B、Make sure probe heater switches on the overhead panel in flight deck are in AUTO position and all the heater lights illuminate.

C、Set probe heater switches on the overhead panel in cockpit in AUTO position so that all the heater lights come into view.

单选题如果机轮温度上升到177度以上，易熔塞的芯就会熔化，轮胎就会漏气。

A、If the wheel temperature reaches as high as 177 deg., the core of safety plug shears off and the tire slips.

B、If the wheel temperature increases to more than 177 deg., the core of the fusible plug melts and the tire deflates.

C、The core of the filter element melts once the wheel temperature is above 177 deg., causing the tire to deflate.

单选题 Small quantities of surface blooming, which can occur on items in storage, do not cause damage to the component.

A、Light surface blooming, which can occur on items in storage, is not detrimental to the component.

B、Surface blooming, often found on corroded items, has little adverse effect on the component when it is mild.

C、Items in storage tend to have surface blooming which is beneficial to the component.

单选题 If the filters become dogged after an unusually short time, send them to the laboratory for analysis of the contamination.

A、A lab analysis of the contamination is required to the frequently dogged filters.

B、When you find the filters blocked in a very short time, ask the vendor to inspect them for any contamination.

C、If the filters get dogged at an unusually early stage, send them to the laboratory to analyze the contamination.

单选题如果在密闭空间使用溶剂，请确保工作区域有良好的空气流通。

A、If you use solvent in a closed space, make sure that there is good airflow in the work area.

B、When using composite in confined space, make sure it has good ventilation.

C、You can not use sealant in enclosed space on condition that there is no good ventilation.

单选题当逆时针转动排放活门时，没有液体流出，除非按压该活门。

A、Turn the drain valve counterclockwise to cause the fluid to stop flowing before the valve is pushed.

B、When you turn the drain valve counterclockwise, no fluid will flow until you push the valve in.

C、Make sure there is no fluid flowing after the valve is pushed, then turn the drain valve clockwise.

单选题 If you do not install the rigging pin, the elevators will move down when there is no pressure in the system.

A、After the system is pressurized, the elevators will drop down no matter where the rigging pin is installed.

B、Without the rigging pin, the elevators will go down when there is no pressure in the system.

C、The rigging pin can prevent the elevators from retracting and expanding when the system is de-energized.

单选题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。

A、If as many as 50% of the holes are contaminated, you should clean the display units behind the holes.

B、The holes on the bottom of the display unit should be cleaned once over 50% of them are clogged due to contamination.

C、If contamination causes a blockage of more than 50 percent of the holes, then clean the holes on the rear of the display units.