A、 On pressurized aircraft, the cabin air is distributed with a system of air ducts leaded from the pressurization source into and throughout the cabin. Typically, air is ducted to and released from ceiling ventilation.
B、 Distribution of cabin air on pressurized aircraft is managed with a system of air ducts leading from the pressurization source into and throughout the cabin. Typically, air is ducted to and released from ceiling vents.
C、 On pressurized aircraft cabin air is distributed with a system of air ducts leaded from the pressurization source into and throughout the cabin. Typically, air is ducted to and released from ceiling flap.
答案：B
A、 On pressurized aircraft, the cabin air is distributed with a system of air ducts leaded from the pressurization source into and throughout the cabin. Typically, air is ducted to and released from ceiling ventilation.
B、 Distribution of cabin air on pressurized aircraft is managed with a system of air ducts leading from the pressurization source into and throughout the cabin. Typically, air is ducted to and released from ceiling vents.
C、 On pressurized aircraft cabin air is distributed with a system of air ducts leaded from the pressurization source into and throughout the cabin. Typically, air is ducted to and released from ceiling flap.
答案：B
A. When the section or subsystem element number is followed with zeros in the subject element number (28-20-00) , the information is applicable to subsystems within the system.
B. This information applies to subsystems of the system when the topic number (28-20-00) following the section or subsystem part number is zero.
C. This information is suitable to subsystems in the system when the topic unit number (28-20-00) is followed by the section or subsystem unit number with zeros.
A. 它有一个简单的轴承并且操作在一个常规的速度。
B. 它有一个简单的轴承并且以恒定速度运转。
C. 它有单轴并且以恒定速度运转。
A. 快速升高温度。
B. 逐渐升高温度。
C. 瞬时升高温度。
A. The air conditioning cooling system supplies cooled air to the cabin. Includes items such as the cooling unit, indicating systems related to the cooler operation, etc.
B. The air conditioning cooling system supplies cold air to the passenger cabin. Includes items such as the cooling unit, indicating systems related to the cooler operation, etc.
C. The air conditioning cooling system supplies cooled air to the passenger cabin. Includes items such as the cooling pack, indicating systems related to the cooler operation, etc.
A. 每一“补充程序” 通常应只包括单一的系统、装置或设备，如自动驾驶仪、电子削减器或区域导航系统。
B. 每个“补充程序” 通常只包括一个单独的系统、装置或部分设备，如自动驾驶仪、电动调节装置或区域导航系统。
C. “补充程序” 通常仅针对单个系统、装置或设备，如自动驾驶仪、电动配平、或区域导航系统。
A. Keep all the parts that are serviceable and discard those that are broken.
B. Retain the parts that are functional and discard those that are of poor condition.
C. Keep all the parts that are operational and drop those that are contaminated.
A. Guarantee a consistent performance of the probe.
B. Maintain an uninterrupted movement of the probe.
C. To ensure continuous movement, the probe must be kept in motion.
A. 需要对车辆以及随车配置的牵引杆和牵引钢索进行牵引。
B. 需要牵引车、牵引杆、牵引钢索等。
C. 需要牵引车、牵引杆、牵引线束等牵引设备。
A. Utilize an oil-free solution.
B. Use a solution with oil.
C. The oil is not used that contains a solution.
A. Normally, it is named “fly by electrical control system”.
B. Normally, we name it “fly by electrical system”.
C. This is commonly referred to as “the flight by wire system”.
