下列关于某单位编制应急预案的说法正确的是（）。

用于调节隧道初期支护喷射混凝土凝结速度的外加剂是（ ）。

Passage2

     Old stereotypes diehard. Picture a video-game player and you will likely imagine a teenage boy, byhimself, compulsively hammering away at a game involving rayguns and aliensthat splatter when blasted. Ten years ago that might have borne some relationto reality. But today a gamer is as likely to be a middle-aged commuterplaying  "Angry Birds" on hersmartphone. In America, the biggest market, the average game-player is 37 yearsold. Two-fifths are female.

     Over the past tenyears the video-game industry has grown from a small business to a huge, mainstreamone. With global sales of $56 billion in 2010, it is more than twice the sizeof the recorded-music industry. Despite the downturn, it is growing by almost9% a year.

    Is this success dueto luck or skill? The answer matters, because the rest of the entertainmentindustry has tended to treat gaming as being a lucky beneficiary of broadertechnological changes. Video gaming, unlike music, film or television, had theluck to be born digital. In fact, there is plenty  for old media to learn.

    Video games have certainly been swept along bytwo forces: demography and technology. The first gaming generation-the childrenof the 1970s and early 1980s-is now over 30. Many still love gaming, and canafford to spend far more on it now. Meanwhile rapid improvements in computingpower have allowed game designers to offer experiences that are now often morecinematic than the cinema.

     But even grantedthis good fortune, the game-makers have been clever. They have reached out tonew customers with new methods. They have branched out into education,corporate training and even warfare, and have embraced digital downloads andmobile devices with enthusiasm. Though big-budget games are still popular, muchof the growth now comes from  "casual" games that are simple, cheap and playable in shortbursts on mobile phones or in web browsers.

     The industry hasexcelled in a particular area-pricing. In an era when people are disinclined topay for content on the web, games publishers were quick to develop"freemium" models, where you rely on non-paying customers to build anaudience and then extract cash only from a fanatical few.

Asgaming comes to be seen as just another medium, its tech-savvy approachcould provide awelcome shot in the arm for existing media groups.

All of the following methods are employed to attract new customers EXCEPT______.

下列选项中，与“水果”和“苹果”的逻辑关系相同的是(    )。

在高中音乐鉴赏课《京剧大师梅兰芳》中，学生欣赏完规定唱段后，教师为学生讲解京剧的悠久历史和发展过程，以及梅兰芳先生在国家动荡之时不为日本人演出而“蓄须明志”的故事，感染和鼓舞学生。这一教学环节的设计，体现了以下哪条课程基本理念?(  )

患者突然眩晕昏仆，面色苍白，呼吸微弱，汗出肢冷，舌淡，脉沉细微。其证候是

某交易者以260美分/蒲式耳的执行价格卖出10手5月份玉米看涨期权，权利金为16美分/蒲式耳，与此同时买入20手执行价格为270美分/蒲式耳的5月份玉米看涨期权，权利金为9美分/蒲式耳，再卖出10手执行价格为280美分/蒲式耳的5月份玉米看涨期权，权利金为4美分/蒲式耳。这种卖出蝶式套利的最大可能亏损是（  ）美分/蒲式耳。

患者男，46岁。发热头痛两天。检查：右下唇黏膜充血，并有糜烂面，表面有灰白色的假膜，略高于黏膜表面，光滑致密，病变周界清楚。颏下淋巴结肿大，并有压痛。
此病人的治疗方法错误的是

9月10日，我国某天然橡胶贸易商与马来西亚天然橡胶供货商签订一批天然橡胶订货合同，成立价格折合人民币31950元/吨。由于从订货至货物运至国内港口需要1个月的时期保值。于是当天以32200元/吨的价格在11月份天然橡胶期货合约上建仓。至10月10日，货物到港，现货价格至30650元/吨，该贸易商将该批货物出售，并将期货合约对冲平仓。通过套期保值操作该贸易商天然橡胶的实际售价是32250元/吨，则该贸易商期货合约对冲平仓价是（）元/吨（不计手续等费用）。

会计准则规定，所有者权益变动中由企业当期经营活动产生的损益列计的项目是(   )。

信托公司不得开展除同业拆入业务以外的其他负债业务，且同业拆入余额不得超过其净资产的（  ）。