发动机启动（空中）：对于第二次到第五次启动发动机，启动机接通最长的时间是多少？Engine Start (Flight): For the 2nd to 5th times, the maximum time for starting engine is:

按下防冰面板上的( )电门，可检查探头加热系统The probes heat system is checked by pressing the switch on the anti-ice panel

A. 左探头LH Probe

B. 右探头RH Probe

C. DET (TEST) ICE

D. 以上都不是None of the above

在高空急流中飞行，对安全影响最大的天气现象是

A. 颠簸

B. 积冰

C. 大风

飞机按气压式高度表指示的一定高度飞行，在飞向低压区时，飞机的实际高度将

A. 保持不变；

B. 逐渐升高

C. 逐渐降低

逆温层大气的特点是

A. 不稳定

B. 稳定

C. 积冰

在卫星云图上，红外云图的色调取决于

A. 目标反射太阳辐射的大小

B. 目标的温度

C. 目标的高低

判断正误True or False: 多功能扰流板协助副翼转弯协调,并具有地面减升功能。 The MFS assist the ailerons for turn coordination and are also used in the GLD function.

如果任何刹车组件过热，一个音响警告声音和（ ）警告信息就会显示在EICAS 主页上。An aural warning sounds and a（ ）warning message is displayed on the EICAS primary page if any of the brake units overheat.

A. BRAKE

B. MLG BAY OVHT

C. BRAKE OVHT

D. GEAR BAY OVERHEAT

（案例分析）2017年9月3日，某机组驾驶飞机执行扎兰屯-海拉尔航班，在海拉尔最后进近阶段副驾驶接到管制指令的同时，机长下达指令“打铃，放轮，襟翼30”，副驾驶接到机长指令“打铃，放轮，襟翼30”后，由于疏忽，在场高1748ft选择45°襟翼，但未放下起落架手柄，机组发现起落架未放下后复飞。二次进近正常落地。请问机组可能存在哪些问题？(Case Analysis) On September 3, 2017, a certain crew flew the aircraft to carry out the Zhalantun-Hailar flight. At the same time as the copilot received the control instruction during the final approach phase of Hailar, the captain gave the instruction "Ring, gear down, and flaps 30”, after receiving the command from the captain “Ring, gear down, and flaps 30”, the copilot, due to negligence, selected the flaps 45° at 1748ft AGL, but the landing gear lever was not selected down. The flight crew found the abnormal situation of landing gear and excuted a missed approach. The second approach was made and ended with a normal landing. What possible problems may exist shown by the flight crew?

在APU燃油关断活门打开的情况下，按压（）会使APU燃油关断活门关闭。When the APU fuel feed shutoff valve (SOV) is open，by pushing（），theSOV will be closed.

A. APU火警按压电门/灯APU FIRE PUSH switch/light

B. APU PWR/FUEL 电门/灯APU PWR/FUEL switch/light

C. A和B。A and B.

D. APU START/STOP电门/灯APU START/STOP switch/light

（在空中）左发动机着火的处置记忆项目? (In flight) What＇s the immediate actions for left engine on fire?