2980. The airplane has been maintained in accordance with manufacturer recommendations or equivalent

A. Solenoid valves shall be indicated as such and shall include a notation indicating whether the valve is spring-loaded to the open or closed position.

B. The Solenoid valve shall appear as follows and shall include an indication that the valve is spring-loaded and that it is currently in the open or closed position.

C. The Solenoid valve shall be shown as follows and shall include a symbol indicating whether the valve is spring-loaded and in the open or closed position.

A. This work is applicable to horizontal installations.

B. This work is applicable to direction installations.

C. This work is applicable to vertical installations.

A. Do an overhaul of the No.2 engine.

B. Do a maintenance of the No.2 engine.

C. Do a modification of the No.2 engine.

A. The user of this schematic diagram is the mechanic

B. The user of this schematic diagram is the pilot

C. The user of this schematic diagram is the flight attendant

A. Repair station must provide housing facilities for properly performing maintenance, which must include good climatic conditions, lighting and control of temperature humidity

B. Repair station must provide housing facilities for properly performing maintenance, which must include good ventilation, lighting and control of temperature dust

C. Repair station must provide housing facilities for properly performing maintenance, which must include good ventilation, lighting and control of temperature humidity

A. 它们可以是活页格式,有一个耐磨的、多环的封面,临时装订,“胶片”或其他适当的形式。

B. 它们可以是活页格式,有一个耐磨的、多环的封面,永久装订,“胶片”或其他适当的形式。

C. 它们可以是固定页格式,有一个耐磨的、多环的封面,永久装订,“胶片”或其他适当的形式。

A. 要先安装螺钉(10),才能安装盖组件(9)

B. 要拆下盖组件(9),首先要拆下这四个螺钉(10)

C. 要拆下螺母(9),首先要拆下这四个螺栓(10)

A. 发动机火警探测系统是一个双环路系统

B. 发动机火警探测系统是一个全循环系统

C. 发动机火警探测系统是一个重复回路系统

A. Engine fairing, including access cover, fairing and stiffeners.

B. The exterior covering of the nacelle. Including access covers, cowling and doublers.

C. External covering of engine nacelle, including service cover, fairing and fixtures.

A. 根据手册控制应急装置。

B. 手动控制逃生装置。

C. 紧急情况下,使用人工操纵。