603.All persons who are in this area must use a respirator.

A. 应说明燃油的总量和可用燃油量,如果燃油可用量超过 FAR 23 部的限制,还应说明原因。

B. 应说明油箱容量和可用燃油量,如果不可用燃油量超过 FAR 23 部规章的限制,还应提供用于确定飞行中不可用燃油量的相关信息。

C. 燃油的总容量如果超出了 FAR 23 部的规定,还应确定飞行中不可用燃油的数量。

D. C.燃油的总容量如果超出了 FAR 23 部的规定,还应确定飞行中不可用燃油的数量。

A. 降低氮气压力至 120 磅/平方英寸。

B. 减小氮气压力 120 磅/平方英尺。

C. 把氮气压力减小 120 磅/平方英尺。

A. For all fuel loadings,the initial airplane weight should be the maximum allowable.

B. The initial airplane weight should contain the maximum allowable for all fuel loads.

C. For all kinds of fuels,the initial aircraft weight should be the maximum allowable.

A. The schematic diagrams need to list a lot of instructions,so the items listed are ordered according to certain rules,this is the order in which the items are placed on the plane.

B. There are schematics which need to list a lot of items,so the items listed should be sorted according to certain rules,such as the order in which the items are placed on the plane.

C. List a large number of schematics in logical order,such as the position of the items on the plane.

A. Before drill the hole,make sure that the point of the drill head is sharp.

B. Prior to drill the hole,make sure that the point of the drill bit is sharp.

C. Before you make the hole,make sure that the point of the drill bit is sharp.

A. 冷却系统可以在客舱控制以提供冷却空气。

B. 冷却系统提供冷却空气控制客舱温度。

C. 冷却系统及其控制为客舱提供冷却空气。

A. 使用耗材时要小心。

B. 小心使用易燃品。

C. 使用化学材料要小心。

A. 可以提供额外的重量和平衡数据以及相关信息。

B. 应当提供与额外的重量和平衡相关的信息。

C. 可以提供额外的配重和配平以及相关信息。

A. 不要拧紧螺母去压紧它。

B. 不要旋转螺母去校准它。

C. 不要拧松螺母去对准它。

A. The form of the climb performance presentation is decided by the airplane manufacturer.

B. The format of the cruise performance presentation is at the discretion of the airplane manufacturer.

C. The form of the cruise performance presentation is at the discretion of the airplane manufacturer.