检修备用润滑油泵首先将油泵自动切换开关指向()A、备用泵 B、运行泵了 C、中间位置

题型:单项选择题

问题:

检修备用润滑油泵首先将油泵自动切换开关指向()

A、备用泵

B、运行泵了

C、中间位置

D、备用泵或运行泵

考点:注水泵工考试中级注水泵工考试中级注水泵工考试题库
题型:单项选择题

三年级有4个班,每班45名学生,每名学生种3棵数,三年级学生一共种了多少棵树?

题型:单项选择题

细胞分裂时,______会发生重要的、明显的变化。 [ ]

A.细胞膜

B.细胞核

C.细胞壁

D.细胞质

题型:单项选择题

That’ s funny! I remember putting my glasses on the desk, but now they’re _____ .

A.missed

B.broken

C.gone

D.disappeared

题型:单项选择题

My husband had just bought a new washing machine for me . I decided to use it the very day and I washed a lot of things .

Everything worked well , but I found one of my husband’s socks(短袜)  missing . I looked everywhere for it , but I couldn’t find it anywhere .

The next morning , I got ready for school as usual . When the bell rang , the students came in . I greeted them and told them what we were going to do that day .

When I turned around to write on the blackboard , the class bursted out a roar (大笑声)! They laughed and laughed . They laughed so much , in fact ,that I was afraid the headmaster would be in to see all this .

I asked the class to stop , but the more I talked , the more they laughed . I decided to pay no attention to them and I continued to write on the blackboard . when I did this , they roared even more .

Finally , the teacher who had the room next to mine came in to see what all the laughter was about .

“Good heavens ,” I said , “Will someone please tell me what is so funny?”

“Oh , God,” said the teacher , “You have a brown sock to the back of your skirt !”

So that’s how I found my husband’s missing sock .

“Oh , well ,” I said to the class , “Let’s just say you have had an unforgettable lesson on static electricity(静电)。”

小题1:What was the writer ?

A.A washer

B.A student

C. A headmaster

D. A teacher小题2:What happened when the writer turned around to write on the blackboard ?

A.The class roared with anger .

B.The class began to laugh loudly .

C.Another teacher came in

D.There was a loud noise outside the room小题3:Why couldn’t she find one of her husband’s socks?

A. Because some students had hidden it .

D. Because her husband had taken it away .

C. Because she had left it in the classroom .

D. Because she never expected that it would stick to her skirt .

小题4:What did the writer do when she got to know why her students laughed?

A.She did nothing but laugh.

B.She got angry with the class .

C.She did nothing

D.She explained the matter in a clever way .

题型:单项选择题

在软件开发过程中常用图来作为描述的工具。DFD就是面向 (39) 分析方法的描述工具。在一整套分层DFD中,如果某一张图中有N个加工(Process),则这张图允许有 (40) 张子图。在一张DFD图中,任意两个加工之间 (41) 。在画分层DFD的时候,应注意保持 (42) 之间的平衡。DFD中从系统的输入流到系统的输出流之间的一连串连续变换形成一种信息流,这种信息流可分为 (43) 两大类。

40()

A.0

B.1

C.1~N

D.0~N

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