采用化学灭火剂喷射到燃烧物上，并参与燃烧物的化学反应，与燃烧反应中产生的游离基结合形

发布时间：2019-03-18 23:53 │ 来源：www.tikuol.com

题型：单项选择题

问题：

采用化学灭火剂喷射到燃烧物上，并参与燃烧物的化学反应，与燃烧反应中产生的游离基结合形成稳定的不燃烧分子结构，而使燃烧停止。这种灭火方法称为______灭火。

A．冷却
B．隔离
C．抑制
D．窒息

考点：中级旅游经济旅游经济专业知识与实务

题型：单项选择题

Have Fun & Learn in Little Sun

We pick your children at school and give them a safe place to play, do homework and learn afternoon.
Experienced Teachers/Lunch&Snacks/Toys&Books
Ages: 6 to 12
Programs: * Languages * Math
* Art * Music
Time: 11:00-7:00 pm, from Monday to Friday
Address: 15 Xinhua Road, Moon City (between Xinxin Bookstore and the post office, across from Yucai School)

小题1:Children can’t learn _____ in Little Sun.

小题2:Mrs King can send her daughter Lucy to Little Sun except _____.

A．6:00 pm on Friday	B．7:00 am on Wednesday
C．11:00 am on Tuesday	D．12:00 am on Monday

小题3:Little Sun will be open for _____in a week.

小题4:Little Sun is _____

A．across from the post office

B．between Yucan School and the post office

C．on Xinhua Road ,Moon City

D．between Xinhua Bookstore and Yucai School

小题5:Who can have fun and learn in Little Sun?

A．Mike, a schoolboy of 15

B．Mary,a seven-year-old girl

C．Cathy,an expericenced teacher

D．Linda,a retired(退体的) doctor

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关于真毛细血管的叙述，正确的是（）

A.真毛细血管口径约750μm左右

B.真毛细血管口径约10μm左右

C.真毛细血管口径约10mm左右

D.前括约肌的舒缩活动不受体温影响

E.真毛细血管前括约肌收缩时，红细胞不能流过真毛细血管

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280千克=______吨

9.56立方米=______立方米______立方分米．

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制作裱花蛋糕时，首先要准备好，首先要准备好（）。

A、所用的蛋糕坯

B、所需的蛋糕架

C、所需的裱制原料

D、制作裱花蛋糕的标准

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题型：单项选择题

All modern ______ are multitasking and can support running several processes simultaneously.

A．database

B．operating system

C．MIS

D．DOS

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