When the autopilot disengages, an aural warning is heard from the aural warning module.

A. 这些单位和组件收集、监管、并向乘客和空乘人员输送氧气。

B. 这些组件和部件用于储存、调节并向乘客和机组人员输送氧气。

C. 这些单位和组件储存、管制、并向乘客和地面机组输送氧气。

A. Obey the safety precautions when you do work with high voltages.

B. When working with high resistances, you should follow the safety precautions.

C. The safety precautions are optional in an environment with high voltages.

A. An "Airplane Weighing Form" shall be included in each handbook and the form shall contain an airplane side view that shows the location of weighing points (using jacking points or landing gear) relative to the datum line.

B. Each handbook shall provide an aircraft side view that is included in an "Airplane Weighing Form" to show the position of weighing points (using jacking points or landing gear) related to the datum line.

C. An airplane three view that shows the weighing points ((using jacking points or undercarriage) relative to the datum line shall be excluded in an "Airplane Weighing Form" of each handbook.

A. Apply two films of protective compound to prevent hydraulic fluid from damaging to the sealant.

B. Apply two layers of protective compound to prevent hydraulic fluid damage to the sealant.

C. Two coats of sealing compound should be applied to prevent hydraulic fluid damage from the sealant.

A. Repair the broken seals.

B. Repair the damaged sealant.

C. Repair the damaging sealant.

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. 计算器，在计算机中，是一种与算术逻辑单元有关系的特别存储注册设备，用来保持计算结果或数据传输。

B. 蓄压器，在计算系统中，是一种与算术逻辑组件相连接的特别存储寄存器，用来控制统计结果或数据传输。

C. 在计算机中，存储器是一种与算术逻辑组件有关系的特别存储寄存器，用来存放运算结果或数据传输。

A. Humidity adjustment is manual.

B. Pressure adjustment is automatic.

C. Temperature adjustment is automatic.

A. Ensure the oxygen tubes are completely clear. If oxygen is mixed with oil or compound together, it will form an explosives. Explosion can cause damage to equipment or injury to personnel.

B. Make sure that the oxygen tubes are fully clean. Oxygen and oil or grease make an explosive mixture. An explosion can cause injury or death to personnel.

C. Guarantee the oxygen tubes are completely free of dirts. Oxygen, oil and grease can combine to form an explosive oxides. Explosions can cause casualties.

A. 如果因出现腐蚀而不得不拆除螺栓，则涂抹润滑油。

B. 如果因腐蚀而不能拆卸螺栓，则涂抹渗透润滑油。

C. 出现腐蚀时不可以拆卸螺栓，需要先涂抹防蚀剂。