3318. When the meter shows 28 volts dc, the relay closes( )

A. 　清洁容器的内表面

B. 　清洁容器工作

C. 　清洁容器表面

A. 　There is different fuel load on each side of the aircraft centerline.

B. 　Avoid different fuel load on each side of the aircraft centerline.

C. 　Make sure that the fuel load on left side of the aircraft centerline is not same with the one on right side.

A. 　Discard the removed fasteners.

B. 　Throw away the removed components.

C. 　Leave out the removed gaskets.

A. 　The slow moving and high pressure air from the compressor is fed with the combustor or burner in which it is mixed with a highly flammable fuel and ignited.

B. 　The slow moving and high pressure air from the compressor goes into the combustor or burner in which it is mixed with a highly flammable fuel and ignited.

C. 　The slow moving and high pressure air from the compressor is fed into the combustor or burner where it is mixed with a highly volatile fuel and ignited.

A. 　机身站位 360 处的地板梁有低度腐蚀(长 2 英寸,直径 1 英寸)。

B. 　机身站位 360 处的地板梁有重度腐蚀(长 2 英寸,半径 1 英寸)。

C. 　机身站位 360 处的地板梁有中度腐蚀(长 2 英寸,直径 1 英寸)。

A. 　收上主起落架;

B. 　收上前起落架;

C. 　放下主起落架;

A. 　This test procedure is compatible without the correct equipment;

B. 　This test procedure is complicated without the correct equipment;

C. 　This test procedure is comprehensive without the correct equipment;

A. 　数据库的加载正在进行中。

B. 　数据库的同步正在进行中。

C. 　数据库的更新正在进行中。

A. 　These instructions are required for towing aircraft in normal or abnormal conditions, such as from soft ground,wet or icy surfaces and in the case of engine is removing or aircraft is damaging.

B. 　These instructions are necessary for towing the aircraft under normal or abnormal conditions, such as from a wet or icy surface on a soft ground and when the engine is removed or the aircraft is damaged.

C. 　These instructions are necessary to tow or push the aircraft in normal or abnormal conditions such as towing from soft ground and slippery or icy surfaces,with engines removed, or aircraft damaged.

A. 　Acquire the flight data from the recorder.

B. 　Eliminate the tape about the information after flight.

C. 　Remove a recording of flight data from the tape.