APU供电时,接通地面电源,电源系统自动()。A.先切断APU电源,再接通地面电源

题型:单项选择题

问题:

APU供电时,接通地面电源,电源系统自动()。

A.先切断APU电源,再接通地面电源

B.先接通地面电源和断开APU

C.同时接通地面电源和断开APU

D.不分先后,随机接通地面电源和断开APU电源

考点:民用航空器维修执照考试737NG机型737NG机型题库
题型:单项选择题

My mother is a diligent and kind woman. She is very busy from morning till night. As a teacher, she works hard.    1   Both my brother and I love her dearly as she loves us.

My mother has been teaching math at a middle school in my hometown. She goes to work early in the morning and does not return home until late in the afternoon.    2   She treats them with patience and teaches them well. For her excellent quality and very good teaching results, she has been elected as a model teacher several times.

  3  . Every day, when she comes back home from work, she sets about doing housework, sweeping the living room and bedrooms or cleaning the furniture, and putting everything in good order. She seems to be busy all the time. As she has been very busy working every day, she looks older than her age. But she looks as cheerful and happy as ever. Mother never buys expensive dresses for herself, but she often buys some inexpensive but high quality clothes for us.    4   She just eats a plain meal outside when she is too busy to cook herself. She lives a busy yet simple life, without any complaints.

Often she says to us, “work while you work, and play while you play. That is the way to be happy and gay. If you do not work, you will become lazy and be of no use to society”. What a piece of good advice this is!    5  . This advice of hers will always serve as a guide to my behavior. My mother is great indeed, and I always feel proud of her.

A.She enjoys listening to classic music.

B.As a mother, she takes good care of us and gives us every comfort.

C.She loves her students and cares for them.

D.She never goes to expensive restaurants to enjoy meals.E. My mother is hard-working and never wastes money.

F. I never forget it and always bear it in my mind.

G. Can you tell us something about your mother?

题型:单项选择题

关于移植,下列哪项说法是错误的()。

A.植皮属于组织器官移植

B.输全血属于细胞移植

C.骨髓移植属于细胞移植

D.肝移植属于器官移植

E.皮肌瓣移植属于器官移植

题型:单项选择题

据研究原始大气的成分与现代大气的成分大不相同,在完成原始大气向现代大气的演变过程中起决定作用的是异养型细菌。()

题型:单项选择题

对相关方提出必要的()要求,以促使其自觉改进环境和职业健康安全绩效,控制环境影响和职业健康安全风险,达到我方提出的()要求。

A、技术、环保;

B、质量、HSE;

C、技术、HSE;

D、QHSE、QHSE;

题型:单项选择题

驾驶台展示的船舶操纵性资料中,其旋回圈:().

A.是船舶全速直航操20º;舵角后重心描绘的轨迹

B.是船舶半速直航操满舵后重心描绘的轨迹

C.是船舶半速直航操20º;舵角后重心描绘的轨迹

D.是船舶全速直航操满舵后重心描绘的轨迹

更多题库