关于微内核和宏内核操作系统,如下哪一项的说法是错误的?()。 A.VxWorks是典

题型:单项选择题

问题:

关于微内核和宏内核操作系统,如下哪一项的说法是错误的?()。

A.VxWorks是典型的微内核结构嵌入式操作系统

B.iOS追根溯源是一个类UNIX操作系统,它属于宏内核架构

C.AndroidOS是典型的宏内核操作系统

D.一般认为微内核系统的实时性较好,故Symbian归类为强实时嵌入式操作系统

考点:嵌入式软件助理工程师嵌入式软件助理工程师题库
题型:单项选择题

短文填词(共10小题,每小题1分,满分10分)

In Grade Eight I took physics. In one test I get                     76.          

only 36 percent of the answers c    .I failed the                   77.          

next one, too. I started to think that maybe I    not                  78.          

good at it. However , I was l    __ .enough to                         79.            

have a teacher     did not take my bad grades as a                     80.          

     (判断 ) of' my abilities, but simply as an indication         81.            

why I should study harder. He pulled me aside and t                 82.               

me that he knew I could do better, He p     me to retake           83.                 

the test, and I pulled my grade to an A. This is                       84.              

I discovered: That some        (科目)'are difficult to                  85.                  

learn does not m     you are not good at them.                       

题型:单项选择题

有关流感病毒叙述错误的是 ()

A.随飞沫传播

B.依靠血凝素与黏膜柱状上皮细胞结合感染细胞

C.在呼吸道柱状上皮细胞内复制

D.属DNA病毒

E.包膜上具有血凝素和神经氨酸酶

题型:单项选择题

下列对象适合应用收益法评估其价值的是( )。

A.政府办公楼

B.学校

C.公园

D.写字楼

题型:单项选择题

由于刨削时,其切削速度低,故生产率较低。( )

题型:单项选择题

运输收入进款专户内不得办理()以外的收付款业务。

A.银行缴款回单

B.银行对账单

C.抵用凭证

D.运输收入进款范围

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