A、 Ensure that no other repairs are underway in the repair area before undertaking this procedure.
B、 This procedure can only be done if there are other repairs in the repair area.
C、 Only proceed with this procedure if there are concurrent repairs being carried out in the designated repair area.
答案：A
A、 Ensure that no other repairs are underway in the repair area before undertaking this procedure.
B、 This procedure can only be done if there are other repairs in the repair area.
C、 Only proceed with this procedure if there are concurrent repairs being carried out in the designated repair area.
答案：A
A. Rise the cylinder up its install position.
B. Lift the cylinder above its installed position.
C. Lift the bushings above its installing position.
A. The engine-driven pump is the major pump that works endless when it is switched on.
B. The engine-driven pumps are the main pumps that runs continuously during operation.
C. The engine-driven pumps are the secondary pumps that operates infinitely after running.
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. All of the top vertical mounting struts are adjustable except the primary mount struts unless they are repaired or replaced. The spare vertical strut (left forward ) and the side strut (right forward) may require adjustment during APU replacement.
B. All of the vertical primary mount struts at the top are adjustable. However, adjustments to the primary mount struts are not required unless a strut is repaired or replaced. The redundant vertical strut (forward left) and the redundant side strut (forward
C. The top of every vertical main retaining struts is adjustable. However, adjusting the main mount strut is not allowed if the strut is not repaired or replaced. During APU replacement, it may be necessary to adjust remained vertical strut (left anterior) a
A. Only representatives from ASD can join the group.
B. Representatives from countries that are not members of ASD are hardly to take part in the group.
C. Both representatives from ASD and from countries that are not members of ASD can join the group.
A. 在飞机座舱增压系统部分，应描述如何识别潜在问题和处理紧急情况。
B. 在飞机座舱增压系统部分，应说明识别可能问题和处理障碍的方法。
C. 在飞机座舱增压系统部分，说明识别问题和处理紧急情况的方法。
A. The housing for the voice recorder unit has these properties: water tolerance, shock resistant and heat resistant.
B. The container for the voice recorder unit has these properties: watertproof, spin resistant and heat resistant.
C. The container for the voice recorder unit has these properties: watertight, shock resistant and heat resistant.
A. Add a bracket if necessary.
B. Add a fastener if necessary.
C. Add a washer if necessary.
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. 不能使用缩写，除非有意义。
B. 不能使用缩写直到它们有通用意义。
C. 除非缩写具有普遍意义，否则不得使用缩写。
