A、 AIRBORNE AUXILIARY POWER UNITS are those power plants (engines) built-in on the aircraft for creating and supplying power in a single type or combination of auxiliary electric, hydraulic, pneumatic or other power.
B、 AIRBORNE AUXILIARY POWER UNITS are those units (engines) that are suspended on the aircraft for bringing and providing power in a single manner or combination of auxiliary electrical, hydraulic, pneumatic, or other power.
C、 AIRBORNE AUXILIARY POWER UNITS are those airborne power plants (engines) which are installed on the aircraft for the purpose of generating and supplying a single type or combination of auxiliary electric, hydraulic, pneumatic or other power.
答案：C
A、 AIRBORNE AUXILIARY POWER UNITS are those power plants (engines) built-in on the aircraft for creating and supplying power in a single type or combination of auxiliary electric, hydraulic, pneumatic or other power.
B、 AIRBORNE AUXILIARY POWER UNITS are those units (engines) that are suspended on the aircraft for bringing and providing power in a single manner or combination of auxiliary electrical, hydraulic, pneumatic, or other power.
C、 AIRBORNE AUXILIARY POWER UNITS are those airborne power plants (engines) which are installed on the aircraft for the purpose of generating and supplying a single type or combination of auxiliary electric, hydraulic, pneumatic or other power.
答案：C
A. The base of the rectangle is 5 cm.
B. The height of the triangle is 5 cm.
C. The base of the triangle is 5 cm.
A. With the aid of the component manufacturer, all components in this chapter can be overhauled in any workshops with different qualifications.
B. Without the data supplied by the component manufacturer, it is possible for the most qualified shop to overhaul any components included in this chapter.
C. You must overhaul any or all components in this chapter in an eligible shop on the basis of data provided by the component manufacturer.
A. The Design Authority is responsible for approving and changing the repair procedure.
B. Any alteration to this repair procedure must get verbal approval of the Design Authority.
C. If you change this repair procedure, get approval of the Design Authority.
A. 这将使用户可以通过检查一份清单来识别受影响的飞机，而不必检查每个单独的持续适航计划以确定适用性。
B. 这将允许用户通过检查一份清单来找出受影响的飞机，或者也可以检查每一个持续适航计划的适用性。
C. 这将使用户可以通过检查一份清单来判断被影响飞机的有效性，而无需检查每个独特的持续适航计划。
A. Three computers collect data and put them together on the data link to the display unit.
B. Three computers collect data and put them together on the data upload to the display unit.
C. Three computers collect data and put them together on the data conveyed to the display unit.
A. The fuselage is a semi-monocoque structure.
B. The fuselage is a demi-plate.
C. The airframe is of half-shell structure.
A. The self-locking function decays after several removal and installation.
B. Repeated removal and installation causes the self-locking nut to lose its locking feature.
C. Avoid repeated removal and installation of the self-locking nut to protect its locking feature.
A. The positive pressure relief valves are fail safe devices. If the aft outflow valve cann’t be closed, these positive pressure relief valves bleed fuselage pressure overboard.
B. The positive pressure relief valves are fail safe devices. If the positive pressure relief valves fails closed, these aft outflow valve bleed fuselage pressure overboard.
C. The positive pressure relief valves are fail safe devices. If the aft outflow valve fails closed, these positive pressure relief valves bleed fuselage pressure overboard.
A. 给出了允许使用的动词，不要使用未列出的动词形式。
B. 动词以批准的表格列出,不要使用表中未列出的动词。
C. 给出了动词允许使用的形式。不要使用未列出的动词形式。
A. 在757上外电源由BPCU检查后再接入电网。如果外电源检查正常，断路器闭合。
B. 在757上外电源由BPCU检查后再接入电网。如果外电源检查正常，接触器关闭。
C. 在757上外电源由BPCU检查后再接入电网。如果外电源检查正常，接触器闭合。
