期货从业人员应当具备( )。 A.投资经验 B.专业知识 C.职业道德 D.专业技

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问题:

期货从业人员应当具备( )。

A.投资经验

B.专业知识

C.职业道德

D.专业技能

考点:期货从业考试期货基础知识期货从业人员执行行为准则(修订)(一)
题型:多项选择题
已知函数f(x)=(sinx+cosx)2-2cos2x.
(Ⅰ)求f(x)的最小正周期和单调递增区间;
(Ⅱ)求函数f(x)在[
π
4
4
]
上的值域.
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有理数a、b、c满足条件2ab>c2和2ac>b2,则①a2+b2>c2;②a2-b2>c2;③a2+c2>b2④a2-c2>b2中,正确不等式的序号是______和______.

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爆炸危险场所的接地装置为了保持电流途径不中断,防止出现电火花,必须将所有设备的金属部分、金属管道以及建筑物的金属结构全部接地(或接零),并连接成连续的整体。

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阅读理解。

     Imagine, one day, getting out of bed in Beijing and being at your office in Shanghai in only a couple of

hours, and then, after a full day of work, going back home to Beijing and having dinner there.

     Sounds unusual,doesn't it? But it's not that unrealistic,with the development of China's highspeed

railway system.And that's not all.China has an even greater highspeed railway plan-to connect the country with Southeast Asia, and eventually Eastern Europe.

     China is negotiating to extend its own highspeed railway network to up to 17 countries in 10 to 15

years, eventually reaching London and Singapore.

     China has proposed three such projects.The first would possibly connect Kunming with Singapore

via Vietnam and Malaysia.Another could start in Urumqi and go through Kazakhstan and Uzbekistan, and possibly to Germany.The third would start in the northeast and go north through Russia and then into Western Europe.

     If China's plan for the highspeed railway goes forward, people could zip over from London to Beijing in under two days.

     The new system would still follow China's highspeed railway standard.And the trains would be able to

go 346 kilometers an hour, almost as fast as some airplanes.

     China's bullet train (高速客车), the one connecting Wuhan to Guangzhou, already has the world's

fastest average speed.It covers 1,069 kilometers in about three hours.

     Of course, there are some technical challenges to overcome.There are so many issues that need to be

settled, such as safety, rail gauge (轨距), maintenance of railway tracks.So,it's important to pay attention to every detail.

     But the key issue is really money.China is already spending hundreds of billions of yuan on domestic

railway expansion.

     China prefers that the other countries pay in natural resources rather than with capital investment.

Resources from those countries could stream into China to sustain development.

     It'll be a winwin project.For other countries, the railway network will definitely create more

opportunities for business, tourism and so on, not to mention the better communication among those

countries.

     For China,such a project would not only connect it with the rest of Asia and bring some muchneeded resources, but would also help develop China's far west.We foresee that in the coming decades, millions of people will migrate to the western regions, where the land is empty and resources unused.With highspeed

trains, people will set up factories and business centers in the west once and for all.And they'll trade with

Central Asian and Eastern European countries.

1.China's new highspeed railway plan will be a winwin project because________.

A.China will get muchneeded resources and develop its western regions

B.China and the countries involved will benefit from the project in various ways

C.China will develop its railway system and communication with other countries

D.the foreign countries involved will develop their railway transportation, business and tourism

2.According to the passage, the greatest challenge to the new highspeed railway plan is________.

A.technical issues

B.safety of the system

C.financial problems

D.maintenance of railway tracks

3.Which of the following words best describes the author's attitude towards China's highspeed railway

      plan?

A.Critical.  

B.Reserved.

C.Doubtful.  

D.Positive.

4.Which of the following might be the best title for the passage?

A.New Railway Standards

B.Big Railway Dreams

C.Highspeed Bullet Trains

D.International Railway Network

题型:多项选择题

若路由器R因为拥塞丢弃IP分组,则此时R可向发出该IP分组的源主机发送的ICMP报文的类型是______。

A.路由重定向
B.目标不可到达
C.源抑制
D.超时

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