下列分子式分别代表什么物质。SO2

题型:问答题 案例分析题

问题:

下列分子式分别代表什么物质。

SO2

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题型:问答题 案例分析题

采用"点数"表示路线价的优点是()。

A.点数易换算成金额

B.点数不受币值变动的影响

C.点数易直接估算估价前后的价值差

D.点数易求取地价上涨率

E.易于表达

题型:问答题 案例分析题

“有时我不得不回避我的情人们,以免他们互相发现。”这是一种( )的爱情。

A.游戏式

B.忘我式

C.激情式

D.逻辑式

题型:问答题 案例分析题

阅读理解。

     EBay  will launch an online group gift-buying service today designed to make it easier for several

people to chip in, buy and pay for gifts using their social-network and e-mail contacts.

EBay North America Vice President Christopher Payne says it is going to be a major step forward in

social commerce, which is the still-small practice of selling products through social networks.Online retail

experts aren't as certain, but eBay says the new tool makes it easier for friends and relatives to chip in

(凑钱) for gifts because it eliminates the headache of collecting contributions.It can also be used for

family members to pitch in to buy, say, an expensive child seat for a mother.

     Anything on eBay that's available immediately, rather than up for bid, can be purchased this way

starting today at groupgifts.eBay.com .If members of an extended family wanted to buy a gift for one

member, one person would choose a gift - or have one recommended by eBay - and invite family

members to chip in using Facebook  or e-mail.Those who wanted to join in would choose an amount

to contribute (or agree to pay a requested amount) and pay using either PayPal  or a credit card.They

could also add a personal note.

     If enough people don't chip in, the organizer can ask people to contribute more or choose a less

expensive gift.

     "I see myself using this most in cases when I typically might not buy someone what they want because

of price," says Nitzan Shaer of Boston, who was part of an online test of the site.

EBay, with its 200 million products, millions of sellers and mobile commerce proficiency, is a logical place

to pull together the products, groups of buyers and payment tools, Payne says.

     At least 12 sites, such as FrumUs.com and eDivvy.com, facilitate (便于,利于) group purchases but

don't sell products.Although a handful of retailers, including Victoria's Secret and 1-800-Flowers , sell

products through Facebook, Payne says he expects social commerce will take off as rapidly as shopping

using mobile devices.EBay did more than $600 million in sales on mobile devices last year and expects

mobile sales to increase to $1.5 billion this year.

     Although one in five consumers surveyed said they'd used Facebook for shopping in the past year,

88% said they would not be buying holiday gifts through a social network, mobile phone or smartphone.

Of these, 26% were reluctant because of security or privacy concerns, and 20% were unclear about the

benefits of using phones or Facebook to shop.

1.What procedure should be followed if your extended family intends to buy your grandpa an 80th

    birthday gift?

①Asking family members to contribute more money if enough members don't chip in

②Choosing a gift at groupgifts.eBay.com

③Paying using PayPal or a credit card

④Contributing or agreeing to pay a requested amount of money via Facebook or e-mail

A.②-①-③-④

B.①-③-②-④

C.②-④-①-③

D.②-③-④-①

2.Where can we most probably read this text?

A. In a research paper

B. In a travel magazine

C. In a microblog

D. On a website

3.What does "it" mean in the 2nd paragraph?

A. The online group gift-buying service

B. People's social-network and e-mail contacts

C. A major step forward in social commerce

D. The still-small practice of selling products through social networks

4. It can be inferred from the text that ______.

A. through eBay's new tool, 200 million products on eBay are available to online shoppers

B. social commerce can eliminate the headache of collecting contributions

C. eBay's new tool will gain mass adoption by online shoppers

D. with the help of eBay's new tool, FrumUs.com and eDivvy.com will also sell products

题型:问答题 案例分析题

在建设工程施工阶段,当通过压缩网络计划中关键工作的持续时间来缩短工期时,通常采取的技术措施有( )。

A.采用更先进的施工方法

B.增加劳动力和施工机械的数量

C.改进施工工艺和施工技术

D.改善劳动条件

E.采用更先进的施工机械

题型:问答题 案例分析题

电梯使用的电源正确的注意事项有()。

A、电梯地线接触是否良好,不充许有零地共用的情况

B、禁止将电梯的电源分接到其它设备上

C、使用相对负载而言容量相当的电梯断路器

D、电源保险丝熔断后可以用铜丝替代

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