1768.An “emergency” however,almost always involves a failure that requires immediate and rapid response,such as a total powerplant failure,fire or smoke,or rapid cabin decompression.

A. Stop the engine run-up practice.

B. Stop the engine start procedure.

C. Stop the engine ignition project.

A. 武装位置是开关的通常位置。

B. 手臂对着的位置是开关的通常位置。

C. 该电门通常放置在预位位置。

A. All range distances shall be expressed in nautical miles.

B. All range dimensions shall be defined in kilometers.

C. Nautical miles should not express all range distances.

A. Install the cushion before you install the seat.

B. Install the seat before you install the cushion.

C. Install the seat after you install the cushion.

A. 手册可能是活页形式,与持久的,多环封面,或显著黏附的。

B. 手册可以是活页形式,耐用,多环盖,或临时装订。

C. 手册可以是有耐用多环封面的活页形式,或永久装订。

A. There will be no fire.

B. Fire will occur sometimes.

C. There is danger of fire.

A. Check valve,that allows fluid blows in one direction completely but blocks all flow in the other direction,is a pneumatic or hydraulic system component.

B. Oneway valve is a hydro or gaseous system component that allows fluid flows in one direction freely but blocks all flow in the opposite direction.

C. Check valve is a hydraulic or pneumatic system component that allows full flow of fluid in one direction but blocks all flow in the opposite direction.

A. 方向舵用于偏航控制,就是控制飞机绕立轴的运动。

B. 方向舵用于横滚控制,就是控制飞机绕横轴的运动。

C. 方向舵用于俯仰控制,就是控制飞机绕纵轴的运动。

A. The toxic conditions are given in Paragraph 2.0.

B. All the test result are given in Paragraph 2.0.

C. All the test conditions are given in Paragraph 2.0.

A. Operation time should be recorded if the pump is in emergency .

B. When you use the emergency pump,record the time of operation.

C. When the pump is for emergency use,record the time of usage.