在一幅地图上,5厘米长的线段表示8千米的实际距离,这幅地图的比例尺是______

题型:填空题

问题:

在一幅地图上,5厘米长的线段表示8千米的实际距离,这幅地图的比例尺是______.

考点:比例尺
题型:填空题

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

 A major source of teen stress is the school exam,and test anxiety is not uncommon.When you recognize your teen is under stress,how can parents help your teen stay calm before an exam?

Be involved.Parents need to be involved in their teen’s work._1__What they look for is your presence—simply sit with them quietly.Communicate openly with your teen.Encourage your teen to express her worries and fears,but don’t let them focus on those fears.

Help them get organized._2_Together,you and your teen can work out a time­table in which she can study for what will be on the test.

Provide a calm setting.Help your teen set up a quiet place to study and protect his privacy. Give them a nutritious diet.It is important for your teen to eat a healthy,balanced diet during exam times to focus and do her best.__3__If this happens,encourage your teen to eat light meals or sandwiches.A healthy diet,rather than junk food,is best for reducing stress.

4__Persuade your teenager to get some sleep or do something active when she needs a real break from studying.Making time for relaxation is important in reducing stress.Help your teen balance her time so that she will feel comfortable taking time out from studying to spend time with friends or rest.

Show a positive attitude._5_Your panic,anxiety and blame contribute to your teen’s pressure.Make your teen feel accepted and valued for her efforts.Most importantly,reassure your teen that things will be all right,no matter what the results are.

A. A parent’s attitude will affect their teen’s emotions.

B. Exam stress can make some teens lose their appetite.

C. They will only make the situation worse.

D. Encourage your teen to relax.E.  The best thing is simply to listen.

F.   Help your teen think about what she has to study and plan accordingly.

G.Your teen may also make negative comments about themselves.

题型:填空题

将胆固醇从肝外组织转运至肝进行代谢的是哪一种脂蛋白()

A.HDL

B.LDL

C.VLDL

D.CM

E.Lp(a)

题型:填空题

角状管式烘干机属于混流式,约占我国塔式烘干机()。

A、四分之一

B、二分之一

C、三分之一

D、半数以上

题型:填空题

超市中有一种“一拉热”方便加热食品,加热剂是分开包装的生石灰和水,使用时将绳子一拉,生石灰和水就能反应,放出热量,加热食品.

(1)在保持生石灰和水的总质量不变的情况下,要使反应后的温度最高,则生石灰和水的质量之比为______;

(2)如果要测定“一定质量的氧化钙和足量的水反应放出的热量(Q)”,现有以下仪器:烧杯、玻璃棒、温度计、酒精灯、托盘天平,其中不需要的是______;

(3)在测定过程中已测定的数据是:水的质量m、反应前水的温度t1、水中加入氧化钙后悬浊液的最高温度t2,你认为除了以上数据之外,还需要测定的数据是______(用文字叙述,再用符号表示);

(4)一定量的氧化钙和水反应放出的热量(Q)的计算式是______.(假设:测定过程中放出的热量没有损失;反应的容器不吸热;加入的氧化钙和反应前的水的温度相同;生成的氢氧化钙悬浊液的比热容为“c”)

题型:填空题

1936年5月,中 * * 放弃“反蒋抗日”口号,第一次公开把蒋介石作为联合的对象的标志是( )

A.《停战议和一致抗日通电》
B.《为抗日救国告全国同胞书》
C.《中国人民对日作战的基本纲领》
D.《中 * * 为公布国共合作宣言》

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