技术分析理论包括()。 A.随机漫步理论 B.切线理论 C.相反理论 D.道氏理论

题型:多项选择题

问题:

技术分析理论包括()。

A.随机漫步理论

B.切线理论

C.相反理论

D.道氏理论

考点:期货从业期货价格分析期货价格分析题库
题型:多项选择题

专业自保公司是介于()之间的一种风险融资方式。

A.风险自留与风险控制

B.风险自留与风险处理

C.风险自留与风险转移

D.风险控制与风险转移

题型:多项选择题

(12分,本题包括A、B两小题,分别对应于“物质结构与性质”和“实验化学”两个选修模块的内容。请选定其中一题,并在相应的答题区域内作答。若两题都做,则按A题评分)

(1)Fe2+在基态时,核外电子排布式为            

(2)羟胺(NH2OH)中采用sp3杂化的原子有          ,羟胺熔沸点较高,是因为分子间存在较强的               

(3)Fe2+与邻啡罗啉形成的配合物(形成过程如图1)中,配位数为        

(4)根据价层互诉理论,C1O4空间构形为           

(5)铁能与氮形成一种磁性材料,其晶胞结构如图2,则该磁性材料的化学式为       

B.生物柴油是高级脂肪酸甲酯,可由油脂与甲醇通过取代反应(酯交换,生成新酯和新醇)得到,用菜籽油制备生物柴油的步骤如下:

①将三口烧瓶和锥形瓶做干燥处理,先向三口烧瓶中加入20g菜籽油,再称取40g正已烷(约61mL)。

②称取甲醇4.6g(约5.8mL)放到锥形瓶中,然后称取0.2g氢氧化钠固体并使之溶解,然后加到三口烧瓶中。

③如下图所示安装三口烧瓶。

④恒温水浴加热,使温度保持在60—65℃左右,搅拌1.5—2h。

⑤停止加热后,冷却,取出三口烧瓶,静置、分液,上层

为生物紫油,正已烷和甲醇,下层主要为甘油。

⑥用温水洗涤制得的生物柴油3—4次。

⑦将水洗后的溶液倒入圆底烧瓶中,蒸馏,温度保持在

120℃左右,直至无液体蒸出后,烧瓶中剩余的液体主要即为

生物柴油。

(1)氢氧化钠的作用是             

(2)正已烷的作用是          

(3)图中冷凝管的作用是          

(4)步骤⑤分液,用到的主要的一种玻璃仪器是           (写名称)

(5)确定步骤⑥已洗涤干净的方法是           

(6)酸价(1g油酯的游离脂肪酸所需氢氧化钾的毫克数)的测定

a. 称取均匀试样Wg注入锥形瓶中,加入石油醚—乙醇混合液25mL,摇动锥形瓶使试样溶解。

b.滴入3滴酚酞,用0.100 mol/L KOH溶液滴定至出现微红色且保持30s不消失,消耗KOH溶液VmL。

则该生物柴油的酸价为          (用含W、V的代数式表示)

题型:多项选择题

When I asked my daughter which item she would keep: the phone, the car, the cooker, the computer, the TV, or her boyfriend, she said "the phone". Personally, I could do without the phone entirely, which makes me unusual. Because the telephone is changing our lives more than any other piece of technology.

Point 1  The telephone creates the need to communicate, in the same way that more roads create more traffic. My daughter comes home from school at 4:00 pm and then spends an hour  on the phone talking to the very people she has been at school with all day. If the phone did not exist, would she have anything to talk about?

Point 2  The mobile phone means that we are never alone. !' The mobile saved my life, "says Crystal Johnstone. She had

an accident in her Volvo on the A45 between Otley and Skipton. Trapped inside, she managed to make the call that brought the ambulance(救护车) to her rescue.

Point 3  The mobile removes our secret. It allows marketing manager of Haba Deutsch, Carl Nicolaisen, to ring his sales staff all round the world at any time of day to ask where they are, where they are going, and how their last meeting went.

Point 4  The telephone separates us. Antonella Bramante in Rome says, "We worked in separate offices but I could see him through the window. It was easy to get his number. We were so near--but we didn't meet for the first two weeks!"

Point 5  The telephone allows us to reach out beyond our own lives. Today we can talk to several complete strangers simultaneously (同时地) on chat lines (at least my daughter does. I wouldn't know what to talk about). We can talk across the world. We can even talk to astronauts (if you know any) while they're space-walking. And, with the phone line hooked up to the computer, we can access(进入) the Internet, the biggest library on Earth.

小题1:How do you understand" Point 1—The telephone creates the need to communicate,... "?

A.People don't communicate without telephone.

B.People communicate because of the creating of the telephone.

C.People communicate more since telephone has been created.

D.People communicate more because of more traffic.小题2:Which of the following best shows people's attitude towards mobile phones?

A.Mobile phones help people deal with the emergency.

B.Mobile phones bring convenience as well little secret to people.

C.Mobile phones are so important and should be encouraged.

D.Mobile phones are part of people's life.小题3:Which points do you think support the idea that phones improve people's life?

a. Point 1. b. Point 2. c. Point 3. d. Point 4. e. Point 5.

A.c, d

B.a, e

C.a, c

D.b, e小题4:It is possible to talk to several complete strangers simultaneously through      .

A.the TV screen

B.a fax machine

C.the phone line hooked up to the computer

D.a microphone小题5:The best heading for the passage is      .

A.The power of Phones

B.Kinds of Phones

C.How to Use Phones

D.Advantage of Phones

题型:多项选择题

在保险实务中,______多适用于某些不易确定价值的财产,如农作物保险、货物运输保险以及以字画、古玩等为保险标的的财产保险合同。

A.定值保险合同
B.不定值保险合同
C.补偿性保险合同
D.给付性保险合同

题型:多项选择题

易燃、易爆、剧毒品严格执行(),两把锁,两本帐(即五双)制度。

A.双人管理,

B.双人保管,

C.双人领发,

D.双人使用

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