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【单选题】
When Lily came home at 5 p. m. yesterday, her mother ______ dinner in the kitchen.
A. cooked
B. was cooking
C. cooks
D. has cooked
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答案
B
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【单选题】
当v2500发动机处于高功率状态时,4号轴承回油valve处于()___
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对CFM56-5B的燃油系统说法正确的是()___
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【单选题】
对于CFM56-5B,EIU的输出信号有()___
A. 只有数字信号
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【单选题】
对于CFM56-5B,FMGC(飞行管理指引计算机)计算()___
A. N1限定值
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C. N1目标值
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【单选题】
对于CFM56-5B,TRA(油门杆解算器角度)信号直接送到()___
A. ECU
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C. FMGC
D. ADIRU
【单选题】
对于CFM56-5B,拆装反推系统的液压控制组件时需释压()___
A. 绿系统
B. 黄系统
C. 蓝系统
D. A或B
【单选题】
对于CFM56-5B,当用发动机FADEC地面电源供电,完成工作后需及时断电,否则可能()___
A. 浪费电源,因为ECU是高耗电计算机
B. 损坏ECU
C. 损坏EIU
D. 没有任何影响
【单选题】
对于CFM56-5B,发动机FADEC地面电源面板目的是()___
A. 恢复EIU电源
B. 切断EIU电源
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【单选题】
对于CFM56-5B,发动机振动显示在()___
A. 发动机页上
B. 巡航页面上
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D. A+B
【单选题】
对于CFM56-5B,反推放出到95%位置时,ECAM上的指示()___
A. 琥珀色“REV”
B. 绿色“REV”
C. “REV”消失
D. “REV”此时出现
【单选题】
对于CFM56-5B,反推放出过程中,由哪一个提供作动筒的伸出()___
A. 增压valve
B. 伸出电门
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D. 收回电门
【单选题】
对于CFM56-5B,反推放出过程中,作动筒的两端___(A)
A. 都通液压油
B. 都通回油
C. 一端通液压油,一端通回油
D. 不确定,因为取决于方向valve的选择
【单选题】
对于CFM56-5B,反推完全打开之后,靠什么保持在完全打开位()___
A. 液压力
B. 空气动力
C. 弹簧力
D. 靠机械锁定装置
【单选题】
对于CFM56-5B,反推系统HCU(液压控制组件)中的压力探测器给ECU发送哪种指示信号()___
A. 系统增压信号
B. 作动筒被作动信号
C. 锁已锁定信号
D. 解锁信号
【单选题】
对于CFM56-5B,飞机在地面,什么时候ECU自动断电()___
A. 飞机上电时
B. 发动机停车时
C. 发动机停车后5分钟
D. 需人工断电
【单选题】
对于CFM56-5B,每台发动机的反推系统有几个伸出电门用于位置监控()___
A. 1
B. 2
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【单选题】
对于CFM56-5B,每一台发动机的反推系统其液压锁是()___
A. 并联
B. 串联
C. 串,并联
D. 不确定
【单选题】
对于CFM56-5B,哪些参数是由ECU直接送到ECAM的()___
A. 主要参数
B. 次要参数
C. 主要和次要参数
D. 以上都不正确
【单选题】
对于CFM56-5B,哪些系统和EVMU(发动机振动监控组件)有接口()___
A. ECAM-FADEC-AIDS(飞机整体式数据系统)
B. ECAM-CFDS-AIDS
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D. ECAM-FADEC-CFDS
【单选题】
对于CFM56-5B,哪种故障需要地面机械人员帮助()___
A. 起动valve打不开
B. 起动valve无法关闭
C. A或B
D. 以上都不正确
【单选题】
对于CFM56-5B,人工油门工作时如果出现飞机失速,此时()___
A. 自动油门会作动
B. N1目标值为TO/GA最大值
C. 需人工将油门杆推到TO/GA位
D. A+B
【单选题】
对于CFM56-5B,如果EIU电源失去,会怎样()___
A. EIU从发动机的发电机获得电源
B. EIU失效,发动机再起动无法进行
C. ECU和点火电源无法得到
D. ECAM上将不再有显示
【单选题】
对于CFM56-5B,如果高压燃油关断valve的命令位置和实际位置不一致时()___
A. 触发ECAM警告
B. 发动机控制面板上“FAULT”灯亮
C. A+B
D. 只有CFDS(中央故障显示系统)有故障记录
【单选题】
对于CFM56-5B,如果主磁堵(MCD)探测到金属屑,则应该()___
A. 更换发动机
B. 检查滑油系统回油路上安装的4个分磁堵,判定故障部位及程度
C. 在润滑组件下部安装4个分磁堵,观察一段时间以判定故障部位及程度
D. 不用采取任何措施
【单选题】
对于CFM56-5B,如果主磁堵探测到金属屑,则会()___
A. 发送到信号到ECU
B. 给ECAM系统提供警告
C. 让视觉指示器工作,用于地面检查
D. 没有任何指示
【单选题】
对于CFM56-5B,如果主磁塞(MCD)探测到金属屑,下列说法错误的是()___
A. 红色跳出指示器工作
B. 驾驶舱无指示
C. 排故工作完成后,视觉指示器自动复位
D. 跳出指示器由电磁线圈触发
【单选题】
对于CFM56-5B,如果主滑油滤堵塞()___
A. 滑油会流经旁通valve和备用油滤
B. IDG滑油温度增加
C. 发动机滑油温度增加
D. 燃油回油valve关闭
【单选题】
对于CFM56-5B,若反推工作过程中一个锁未解锁,则()___
A. 只有其他3个门伸出
B. 其他锁会靠液压重新锁上
C. 反推不能工作
D. 不会影响反推放出
【单选题】
对于CFM56-5B,什么情况下,ECU控制高压燃油关断valve打开()___
A. 转动选择器转到“IGNSTART”位
B. 转动选择器转到“CRANK”位
C. 主电门放到“ON”位
D. 转到选择器转到“IGNSTART”或“CRANK”位,主电门放到“ON”位
【单选题】
对于CFM56-5B,什么情况下可以打开高压燃油关断valve()___
A. 燃油计量valve来的燃油压力
B. 高压燃油关断锁电磁线圈断电
C. 高压燃油关断锁电磁线圈通电
D. A+B
【单选题】
对于CFM56-5B,为了让反推系统不工作,有一个操作手柄位于()___
A. 反推转动门上
B. 液压关断valve上
C. 液压控制组件上
D. 作动筒上
【单选题】
对于CFM56-5B,下列哪个是由FADEC控制的()___
A. EIU
B. 油门杆角度
C. 发动机额定推力
D. 油门杆解算器角度
【单选题】
对于CFM56-5B,下列哪种情况会导致FADEC选择自动连续再点火()___
A. “IGNSTART”选择
B. 探测到熄火
C. ECU故障
D. 以上都不正确
【单选题】
对于CFM56-5B,以下哪个不是由发动机滑油系统润滑的()___
A. 1,2,3号轴承
B. 齿轮箱
C. 发电机
D. 4,5号轴承
【单选题】
对于CFM56-5B,用MCDU做反推测试时,CFDIU(中央故障显示接口组件)模拟()___
A. TLA(油门杆角度)
B. 飞机在地面
C. N2条件
D. EIU(发动机接口组件)输入信号
【单选题】
对于CFM56-5B,在反推放出过程中,哪个部件让作动筒伸出()___
A. 增压valve
B. 方向valve
C. 放出电门
D. 液压关断valve
【单选题】
对于CFM56-5B,在飞行中油门杆介于两个卡点之间,N1限定值取决于()___
A. 油门杆位置
B. 上卡点位置
C. 下卡点位置
D. 不确定
【单选题】
对于CFM56-5B,在人工起动模式中N2达到50%时,会有什么情况()___
A. “MANSTART”电门“ON”灯灭
B. ECAM上出现起动valve关闭的信息
C. 起动valve已经关闭
D. 以上都不正确
【单选题】
对于CFM56-5B,在自动起动模式,哪种情况FADEC会自动完成数次起动尝试()___
A. 点火故障
B. EGT超限
C. 发动机失速
D. 以上三种情况都可能
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