A、 The user of the schematic diagram is the pilot.
B、 The captain must use the schematic diagram.
C、 The principle scheme should be used by the co-pilot.
答案：A
A、 The user of the schematic diagram is the pilot.
B、 The captain must use the schematic diagram.
C、 The principle scheme should be used by the co-pilot.
答案：A
A. The filter must be replacedbefore putting new oil in the system.
B. The replacement of the filter is optional before refueling the system.
C. The filter can not be replaced unless you put new oil in the system.
A. 胎压波动会降低轮胎冷却的速度。
B. 当轮胎冷却后胎压会减小。
C. 胎压受到温度因素的影响。
A. 大量的高压燃油供油用于作动筒控制和到燃烧室的计量燃油,其余部分通过溢流活门返回给低压系统。
B. 除作动器控制和到燃烧室的计量燃油外,过量的高压燃油供油通过溢流阀返回给低压系统。
C. 超量的高压燃油供油用于作动筒控制和到燃烧室的计量燃油,之后通过减压阀返回给低压系统。
D. C.超量的高压燃油供油用于作动筒控制和到燃烧室的计量燃油,之后通过减压阀返回给低压系统。
A. 在描述飞机行李舱时,应提供警告不要在飞机上任何地方携带危险品。
B. 在描述飞机行李舱时,警告不要在飞机上任何地方携带爆炸物。
C. 在描述飞机行李舱时,警告不要从飞机上任何地方带走危险品。
A. Reserve the inflammable material at least 50 inches away from the work area.
B. Deposit the explosive substance out of 50 feet with the work area.
C. Keep flammable materials at a minimum distance of 50 feet from the work area.
A. 在充气活门上的防尘螺帽被拆下来了,这样新鲜的空气源才能被连接到气门杆和螺套上,以打开充气阀门。
B. 在充气阀门上的可调节螺帽被拆除了,这样新鲜的空气源才能被连接到气门杆和螺套上,以打开充气阀门。
C. 充气阀门上的防尘帽被拆除,外接气源连接到阀门杆,旋转螺母被旋开以打开充气阀门。
D. C.充气阀门上的防尘帽被拆除,外接气源连接到阀门杆,旋转螺母被旋开以打开充气阀门。
A. Disconnect the connection.This connection is downstream of the valve.
B. Disconnect the connection.The valve is downstream of the connection.
C. Disconnect the valve.The valve is downstream of the connection.
A. When the pressure decreases,lift the cover.
B. When the pressure increases,lift the cover.
C. When the pressure decreases,lift the covering.
A. 飞机或其系统的缺陷经常被第三方给出文字描述。
B. 总的来说,对飞机或系统的排故不受第三方的限制。
C. 一般来说,在描述飞机或其系统时,应该使用第三人称。
A. When you do work with cleaning agents,use breathing equipment.
B. When you do work with cleaning fluid ,use breathing equipment.
C. When you do work with cleaning fluid ,use breath equipment.
