现有下列物质：①铁；②空气；③二氧化碳；④水；⑤氮气；⑥高锰酸钾受热分解制取氧气

发布时间：2017-05-03 19:37 │ 来源：www.tikuol.com

题型：填空题

问题：

现有下列物质：①铁；②空气；③二氧化碳；④水；⑤氮气；⑥高锰酸钾受热分解制取氧气的剩余物．其中属于混合物的是______（填序号，下同），属于单质的是______，属于化合物的是______．

考点：单质和化合物纯净物和混合物

题型：填空题

完形填空。

     I am a student in Grade Three. I began to learn English the year before last. English isn't very   l   to learn. But I like it very much.
     2   do I study English?
     In the first year; I found   3   very difficult to memorize new words. At first I   4   a lot of time on them. I learned new words only   5   reading and writing them,   6  a few days later I forgot them. Later, I came to know how to do it well. I paid more
attention to   7   and spelling.
For example :

8 I have learned a lot of new words by heart. Every morning after I get up, I do some reading. At school I 9 to speak English with my classmates and go over 10 I have learned. Nothing is too hard if you put your heart into it.

( )1. A. hard
( )2. A. Why
( )3. A. this
( )4. A. took
( )5. A. with
( )6. A. and
( )7. A. pronunciation
( )8. A. By the way
( )9. A. join
( )10.A. that

B. excited
B. What
B. it
B. paid
B. for
B. but
B. words
B. In this way
B. lose
B. what

C. easy
C. Unless
C. that
C. spent
C. as
C. then
C. reading
C.. To begin with
C． try
C. which

D. fast
D. How
D. /
D. cost
D. by
D. however
D. writing
D. Later on
D. realize
D. when

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题型：填空题

机械式内割刀的锚定机构中有（）卡瓦牙及滑牙套、弹簧等，起锚定工具作用。

A、四个

B、三个

C、二个

D、一个

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题型：填空题

硬支气管镜检查的适应证不包括（）。

A.取出支气管异物

B.严重活动性咯血的止血治疗

C.激光治疗气管 * * 状瘤

D.了解气管狭窄部位

E.晚期肿瘤气管狭窄放置扩张支架

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题型：填空题

某一磁盘请求序列(磁盘号)如下：　　0 22 5 7 11 21 2 　　按照最短寻道时间优先磁盘调度算法对磁盘请求进行服务，设当前磁头在4道上，则磁臂总移动道数为( )

A．68

B．40

C．32

D．22

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题型：填空题

阿里巴巴中文站的信用体系不包括以下哪个方面的信息？（）

A.诚信通档案

B.工商注册信息查询

C.投诉曝光机制

D.信用记录搜索

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