A、 通气油箱排放单向活门也防止燃油从1号和2号主油箱流到通气油箱。
B、 通气油箱排放检查活门也帮助1号和2号主油箱燃油流到通气油箱。
C、 通气油箱排放单向活门也允许燃油从1号和2号主油箱流到通气油箱。
答案：A
A、 通气油箱排放单向活门也防止燃油从1号和2号主油箱流到通气油箱。
B、 通气油箱排放检查活门也帮助1号和2号主油箱燃油流到通气油箱。
C、 通气油箱排放单向活门也允许燃油从1号和2号主油箱流到通气油箱。
答案：A
A. 电线代码由电路功能代码、电线编号、电线段字母和电线尺寸组成。通常会添加后缀，表示地线（N）、相位（A、B等）或热电偶材料（铝镁合金等）。
B. 电线代码由电路功能代码、电线编号、电线段字母和电线尺寸组成。通常会添加后缀，表示接地（N）、阶段（A、B等）或热敏电门材料（铝镁合金等）。
C. 电线代码由电路功能代码、电线编号、电线段字母和电线尺寸组成。通常会添加后缀，表示地线（N）、相位（A、B等）或热敏电门材料（铝镁合金等）。
A. In some cases, for complex aircraft, special training should be conducted so that the aircraft and its systems can be maintained properly.
B. Sometimes, especially for complex airplanes, it may be necessary to provide specific training in the proper maintenance of the airplane and its systems.
C. Sometimes, for particularly complex airplanes, it is required to provide special training so as to perform proper maintenance of the aircraft and its systems.
A. Select the specific system that you will apply pressure to.
B. Select the hydraulic system that you will pressurize.
C. Identify the hydraulic system that you will bleed.
A. In order to obtain additional clearance, gaskets may be added.
B. Additional shims may need to be added to obtain proper clearance.
C. Add special shims as necessary may vary the clearance.
A. 储存装置是系统中用于储存液压油的部分，包含油箱、加油系统、内置漏斗、隔板、集油槽和放油装置等。
B. 储存装置是系统中用于储存滑油的部分，包含油泵、加油系统、内置漏斗、隔板、集油槽和放油装置等。
C. 储存装置是系统中用于储存滑油的部分，包含油箱、加油系统、内置漏斗、隔板、集油槽和放油装置等。
A. A mixture of fuel and oxygen can cause an explosion.
B. A mixture of fuel and nitrogen can cause an burn.
C. A mixture of gas and oxygen should cause an explosion.
A. Make sure that there is a different distance between the holes.
B. Make sure that you space the holes equally.
C. The holes should have long distances.
A. When wheel is dried, clean with the compressed air.
B. When wheel is cleaned, dry with the compressed air.
C. When wheel is cleaned, dry with the impressed air.
A. Remove the magnesium drain plug from the hydraulic reservoir.
B. Replace the magnetic drain plug of the oil tank.
C. Remove the magnetic drain plug from the oil tank.
A. If you find metal particles in the reservoir, find their source and repair the broken part.
B. If you find metal particles in the pump, find their source and repair the defective part.
C. If you find material particles in the pump, find their source and repair the damaged part.
