不属于全等节拍流水施工特点的是()。 A.t=k B.时间连续 C.空间不连续 D.

题型:单项选择题

问题:

不属于全等节拍流水施工特点的是()。

A.t=k

B.时间连续

C.空间不连续

D.T=(m+n-1)K+∑Z-∑D

考点:监理员监理员综合练习监理员综合练习题库
题型:单项选择题

核对人发药人

有关处方药物和非处方药物的说法正确的有哪些()

A.经SFDA确定的非处方药改变剂型,但不改变适应证给药剂量以及给药途径的药品,在申请注册的同时可申请为非处方药

B.我国遴选非处方药的原则是:应用安全、疗效确切、质量稳定、使用方便

C.甲类非处方药不准在大众媒介上广告宣传

D.购药者凭医师处方即可在社会药店零售购买和使用处方药

E.乙类非处方药可采用网上销售方式销售

F.经批准的商业企业无需具有《药品经营许可证》即可零售乙类非处方药

题型:单项选择题

—Can you guess if they ________tomorrow?

—They will come if they ________free, I think.

A.come; will be

B.will come; will be

C.come; are

D.will come; are

题型:单项选择题

下列对质量守恒定律的理解中正确的是(  )

A.有反应A+B═C+D,根据质量守恒定律可知,参加反应的A和B的质量分别等于生成的C和D的质量

B.水结成冰的前后总质量不发生改变,这有力地证明了质量守恒定律

C.铁丝在氧气燃烧后增加的质量等于参加反应的氧气的质量

D.100克高锰酸钾完全分解所得固体的质量为100克

题型:单项选择题

下列对拿破仑的评价,正确的是

①拿破仑是独裁者 ②拿破仑战争既打击了欧洲的封建势力也侵略了别的国家

③拿破仑颁布的《民法典》维护了法国大革命的成果 ④拿破仑从未打过败仗 [ ]

A.①②③

B.②③④

C.①②④

D.①③④

题型:单项选择题

Remember Second Life, the virtual world that was supposed to become almost as important as the first one Now populated by no more than 84,000 avatars at a time, it has turned out to be a prime example of how short-lived Internet fads can be. Yet if many adults seem to have given up on virtual worlds, those that cater to children and teenagers are thriving. Several have even found a way to make money.

In America, nearly 10 million children and teenagers visit virtual worlds regularly, estimates eMarketer, a market researcher-a number the firm expects to increase to 15 million by 2013.As in January, there were 112 virtual worlds designed for under-18s with another 81 in development, according to Engage Digital Media, a market research firm.

All cater to different age groups and tastes. In Club Penguin, the market leader, which was bought by Disney in 2007 for a whopping $ 700 million, primary-school children can take on a penguin persona, fit out their own igloo and play games. Habbo Hotel, a service run from Finland, is a global hangout for teenagers who want to customise their own rooms and meet in public places to attend events. Gala Online, based in Silicon Valley, offers similar activities, but is visited mostly by older teens who are into Manga comics.

Not a hit with advertisers, these online worlds earn most of their money from the sale of virtual goods, such as items to spruce up an avatar or a private room. They are paid for in a private currency, which members earn by participating in various activities, trading items or buying them with real dollars.

This sort of stealth tax seems to work. At Gala Online, users spend more than $1 million per month on virtual items, says Craig Sherman, the firm’s chief executive. Running such a virtual economy is not easy, which is why Gaia has hired a full-time economist to grapple with problems that are well known in the real world, such as inflation and an unequal distribution of wealth.

There are other barriers that could limit the growth of virtual worlds for the young, but the main one is parents. Many do not want their offspring roaming virtual worlds, either because they are too commercial or are thought to be too dangerous. Keeping them safe is one of the biggest running costs, because their sponsors have to employ real people to police their realms.

Youngsters are also a fickle bunch, says Simon Levene of Accel Partners, a venture- capital firm. Just as children move from one toy to another, they readily switch worlds or social networks, often without saying goodbye.

Even so, Debra Aho Williamson, an analyst at eMarketer, believes "these worlds are a training ground for the three-dimensional web". If virtual worlds for adults, which so far have been able to retain only hardcore users, manage to hang on for a few years, they may yet have a second life.

In the first paragraph it says that "Several have even found a way to make money" Which of the following could possibly be the "way" ()

A. Sales of the copies of the game

B. Sales of virtual goods in the game

C. Sales of game peripheral goods, such as dolls and OST CDs

D. Development of different games towards gamers of different ages

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