A、 Oxygen occurs occasionally.
B、 Oxidation occurs very easily.
C、 Oxygen happens very easily.
答案：B
A、 Oxygen occurs occasionally.
B、 Oxidation occurs very easily.
C、 Oxygen happens very easily.
答案：B
A. 描述飞机起落架时，应描述其相应的结构（构件）。
B. 描述飞机起落架时，应描述其建设。
C. 描述飞机起落架时，应描述施工方法。
A. 电源系统描述的是发电、控制和通过汇流条向其他系统提供交流/直流电的电气组件和部件，包括发电机、继电器、变流器、电瓶等
B. 电源系统描述的是发电、控制和通过汇流条向其他系统提供交流/直流电的电气组件和部件，包括发电机、接触器、变流器、电瓶等
C. 电源系统描述的是发电、控制和通过汇流条向其他系统提供交流/直流电的电气组件和部件，包括发电机、接触器、整流器、电瓶等
A. Find the related EICAS status message which present with the maintenance information .
B. Find the correlated maintenance message that shows with the EICAS status message.
C. Find the applicable maintenance message displaying with the EICAS status message.
A. 铝制品力矩值可以适用于铝、钢、或钛材料的安装力矩。
B. 对于安装在铝凸台上的铝、钢或钛配件，使用铝配件扭矩值。
C. 铝质安装台使用的力矩值，在铝、钢铁或钛合金制品固定连接时都适用。
A. 当火警启动时，温度增加并引起灭火器工作。
B. 当火焰开始时，温度增加并造成触发器工作。
C. 当起火时，温度升高并使探测器工作。
A. 乘客空调供给从混合总管处获得空气。
B. 乘客空调分配从混合总管处获得空气。
C. 乘客空调分配从混合软管处获得空气。
A. 如果你不能脱开杆的位置，新杆的长度很可能需要调节。
B. 如果你不能断开杆和活塞，可能量错了新杆的长度。
C. 如果你不能接合杆和活塞，新杆的长度可能是不正确的。
A. This procedure is only void in digital mode.
B. This procedure is only valid in digital mode.
C. This procedure is only ineffective in digital mode.
A. Even though this specification is conformed to recognized industry practices , it is prepared in broad genuine terms and it is recognized that problems will occur which are not handled enough by the specification.
B. Although this specification coheres with recognized industry practices , it is written in vast general terms and it is asserted that problems will appear which are not treated sufficiently by the specification.
C. Though this specification complies with accepted industry practice, it is compiled in wide generic terms and it is recognized that problems which are not treated adequately by the specification will arise.
A. 如果产品的简单性允许，制造商也可以选择将相关系统进行组合。
B. 当产品允许简单组合，制造商还可能对其选择的相关系统进行分组。
C. 当产品可以组合在一起，制造商还可以选择对系统关联进行简要说明。
