材料题

题目
材料题
C
Will it matter if you don’t take your breakfast Recently a test was given in the United States.Those tested included people of different ages,from 12 to 83.During the experiment,these people were given all kinds of breakfasts and sometimes they got no breakfast at all.Special tests were set up to see how well their bodies worked when they had eaten a certain kind of breakfast.The results sow that if a person eats a proper breakfast,he or she will work with better effect(影响)than if he or she has no breakfast.This fact appears to be especially true if a person works with his brains.If a student eats fruit,eggs,bread and milk before going to school,he will learn more quickly and listen with more attention in class.Contrary to(与……相反)what many people believe,if you don’t eat breakfast,you will not lose weight.This is because people become so hungry at noon that they eat too much for lunch,and end up gaining weight instead of losing.You will probably lose more weight if you reduce(减少)your other meals.


The results of the test show that.

A.breakfast has great effect on work and studies
B.breakfast has little to do with a person’s work
C.a person will work better if he has simple breakfast
D.those working with brains should have much for breakfast
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相似问题和答案

第1题:

根据下列选项,回答 46~47 题:

A.控释膜材料

B.骨架材料

C.压敏胶

D.背衬材料

E.药库材料

TDDS的常用材料分别是

第 46 题 聚硅氧烷( )。


正确答案:C

第2题:

锅炉炉墙材料分为耐火材料、保温材料和密封材料的同时,还有填充材料和其他辅助材料。()

此题为判断题(对,错)。


参考答案:正确

第3题:

按照材料的燃烧性能,材料分为燃烧材料和非燃烧材料两类。()

此题为判断题(对,错)。


参考答案:错误

第4题:

判断题
激光材料是光介质材料,光纤材料而是光功能材料。
A

B


正确答案:
解析: 两者互换

第5题:

填空题
药用高分子材料按来源可分为()材料、()材料、()材料。

正确答案: 天然高分子,半合成高分子,合成高分子
解析: 暂无解析

第6题:

按材料计划用途分为材料需用计划、材料申请计划、材料供应计划、材料采购计划、材料加工订货计划及临时追加材料计划。( )

此题为判断题(对,错)。


参考答案:错

第7题:

根据下列选项,回答 50~53 题:

A.控释膜材料

B.骨架材料

C.压敏胶

D.背衬材料

E.保护膜材料

第 50 题 聚乙烯醇( )


正确答案:B

第8题:

根据下列题干及选项,回答 62~64 题:

A.溶蚀性骨架材料

B.亲水凝胶型骨架材料

C.不溶性骨架材料

D.渗透泵型控释片的半透膜材料

E.常用的植入剂材料

第 62 题 羟丙甲纤维素( )。


正确答案:B
本题考缓控释制剂的骨架材料。缓控释制剂原理中各骨架片所用材料,A选项有巴西棕榈蜡、硬脂酸、硬脂醇、单硬脂酸甘油酯等;8选项有羟丙甲纤维素(最常用)、甲基纤维素、CMC-Na等;C选项有聚乙烯、聚氯乙烯、乙基纤维素等;D选项有醋酸纤维素、EC等;E选项主要有硅橡胶等。

第9题:

填空题
建筑材料按功能分为()材料、()材料、()材料、()材料、()材料、()材料等。

正确答案: 结构,防水,胶凝,装饰,防护,隔热保温
解析: 暂无解析

第10题:

填空题
根据材料的探究类型可以将材料划分成()的材料、()材料、科技活动的材料和科学工具四种

正确答案: 操作实验,制作创造类
解析: 暂无解析