A、 These control surfaces are hydraulically supplied and are only extended or retracted during take off and landing.
B、 These control surfaces are hydraulically moved and are only extended or retracted during takeoff and landing.
C、 These control surfaces are hydraulically powered and are only extended or retracted during takeoff and landing.
答案：C
A、 These control surfaces are hydraulically supplied and are only extended or retracted during take off and landing.
B、 These control surfaces are hydraulically moved and are only extended or retracted during takeoff and landing.
C、 These control surfaces are hydraulically powered and are only extended or retracted during takeoff and landing.
答案：C
A. Restore sections that relate to certain types of trouble.
B. Locate sections that relate in general types of trouble.
C. Recognize sections that lead to particular types of trouble.
A. 确保该区域的设备都清空了。
B. 确保该区域的设备都清洁了。
C. 确保该区域那一台设备是完好的。
A. 在向系统中注入新滑油之前,强制性童置油滤。
B. 在向系统中注入新滑油之前,必须更换油滤。
C. 在系统中注入新滑油之前,建议更换过滤器。
A. 每一页都必须载明原始事件日期直到修订,修订时,也必须载明最新修订的事件期。
B. 每一页都必须标明原始版本的出版日期,直到修订为止。当有修订时,也必须标明最新修订版的出版日期。
C. 每一页都必须标明原刊出版到修订的日期,修订时,也必须标明最新修订版的出版日期。
A. Make the panel display a warning notice in order to reveal the operation of the controls.
B. Tag a warning notice on the panel to remind the operation of the controls.
C. Put a warning notice on the panel to prevent operation of the control.
A. 当使用手摇泵时,记录使用时间。
B. 当使用应急泵时,记录使用时间。
C. 当使用应急泵时,记录开始时间。
A. The airborne power plants generate and supply a or some power of auxiliary electric, hydraulic, pneumatic or other power.
B. The airborne power plants supply and distrubt a single type or combination of auxiliary electric, hydraulic, pneumatic or other power.
C. the auxiliary electric, hydraulic, pneumatic or other power is generated and supplid by a or several APU
A. The isolation blanket has a waterproof layer that is installed in a brick configuration to prevent leakage of condensed water into the carriage.
B. The insulation blankets have a waterproof layer and are installed in a tiled configuration to prevent leakage of condensed water into the compartment.
C. The insulating blankets have a watertight layer which is mounted in a shingled configuration to protect leakage of water condensation into the compartment.
D.
E.
F.
G.
H.
I.
J.
解析：
A. LEDs are simple and practical.
B. LEDs are complex and reliable.
C. LEDs are simple and dependable
A. Water above the kitchen floor can seep in through small holes in the floor surface, invisible to the naked eye.
B. Eyes cannot see the vapor which may penetrate through small holes of the floor surface in the galley.
C. Moisture above the galley floor can go through small holes in the floor surface area and stay out of view
