A hot air start pipe indicates that there is （）.

[名词解释] 热启动 hot start up

[单选题]If the engine does not start on air, it may be due toA．low compression of the fuel pumpsB．incorrect timing of fuel pumpsC．the starting air valves stuckD．air-locks in fuel oil pipeline

[单选题]If the engine does not start on air, it may be due to （）A . low compression of the fuel pumpsB . incorrect timing of fuel pumpsC . the starting air valves stuckD . air-locks in fuel oil pipeline

[单选题]If the engine does start on air, but combustion does not immediately begin, the cause may be _____.A．failure of the fuel pumpsB．starting air pressure too lowC．stop valve in air line closedD．the turning gear still engaged

[单选题]If the engine does start on air, but combustion does not immediately begin, the cause may not be （）.A . low compressionB . failure of the fuel pump to discharge fuelC . incorrect timing of fuel pumpD . turning gear being still o

[单选题]空调控制面板上“HOT AIR”打到“OFF”时（）A . 驾驶舱配平空气活门关闭B . 前客舱配平空气活门关闭C . 后客舱配平空气活门关闭D . A+B+C

[单选题]在ECAM的空调（COND）页面内，HOT AIR字样显示白色或者琥珀色对应那个活门的开或者关？（）A . 温度控制活门B . 掺混空气压力调节活门C . 掺混空气活门D . 流量控制活门

[名词解释] 下管pipe sinking

[单选题]英语PIPE指（）A .放大器B .铁管C .气管D .通气孔

[单选题]If the engine （） for a long period, there will be a danger of frost.A . must to stand inoperativeB . has to stand inoperativeC . must be stood idleD . will stand idle