高炉煤气管道一旦发生泄漏煤气，它向下沉、向下扩散。（）

[填空题]防护棚搭设与拆除时，应设（），并应派（）监护。严禁上下同时拆除。

[名词解释题]速度性

[判断题]资本固定化比率反映公司自有资本的固定化程度。

[单选题]It seems obvious that you don"t give away your product for free but this is exactly what indie rock group The Crimea did earlier this year. The band"s reasoning goes like this: more people will download the free album than would pay for it. Therefore more people will heat. The Crimea"s music. These people will then pay money for concerts by the band and perhaps buy a T-shirt or other merchandise. If the band play regular concerts to crowds of 200 or 300 people they can make more money than they would from sales of a CD. There will always be some people who want something they can hold in their hands so they will release the CD into the shops too—but making money through sales of their music isn"t the top priority. The story illustrates the creative thinking going on in the music business in response to dramatic changes over the last few years in the way that people buy music. Sales of music digitally—to computer, phones and MP3 players rose to $2 billion in 2006—an increase of almost 100 percent on the previous year—yet overall record company sales are down. People are simply not buying CDs in record shops in anything like the numbers they used to. This trend looks set to continue, so the big question for the music industry is whether they can successfully manage the move to being primarily a digital industry without profits falling to unacceptable levels. There are both positive and negative signs. On the plus side, more and more people are buying music on mobile phones, which allows people to make impulse purchases—they can buy a song as soon as they hear it. Research by the UK mobile operator 3 suggested that 75 percent of 16 to 24-year-olds wanted to buy a track they liked as soon as they heard it. With so much competition for people"s disposable income, a product that you can sell immediately is a big advantage. The bad news for record companies, however, is the amount of music that is downloaded illegally. Piracy—usually in the form of cheaply copied CD—has long been an issue for the music business but the Internet means music can be copied and distributed freely through file-sharing sites on a large scale than ever before. It is this situation that leads bands to start giving away their music for free and promises to make the next few years a very interesting time in the music business.What effect has the Internet had on music piracy

[名词解释题]故意犯罪形态

[单选题]反渗透高压泵出口应设有（）保护。

[单选题]用药禁忌的内容除哪项外（）。

[单选题]TDMA信道采用保护时隙的原因是（）.

[填空题]保持路基稳定，加强轨道的弹性设计，（）等，是控制高速铁路振动污染的主要方向。

[单选题]与乳头状瘤最密切相关的人乳头状瘤病毒（HPV）是（）。

[判断题]高炉煤气管道一旦发生泄漏煤气，它向下沉、向下扩散。（）

[单选题]高炉煤气管道、发生炉煤气管道、转炉煤气管道不准（）敷设。

[填空题]煤气管道应涂成（）色，并定期防腐；厂区主要煤气管道应标有明显的煤气（）和（）标志，横跨道路的煤气管道要标示标高，设置（）

[填空题]煤气管道宜涂灰色，厂区主要煤气管道应标有明显的（）和（），横跨道路煤气管道要标示标高，并设防撞护栏。

[判断题]煤气管道宜涂灰色，厂区主要煤气管道应标有明显的煤气流向和种类标志，横跨道路煤气管道要标示标高，并设置防撞护栏。

[单选题]高炉煤气管道的（）处，应设煤气放散管及阀门。该阀门的开关应能在地面或有关的操作室控制。

[单选题]高炉煤气管道停煤气时，从煤气来源阀门（）附近通氮气赶煤气。

[填空题]煤气管道发生爆炸时，管径在15Omm以上，关闸阀降低煤气压力最低不得小于（）Pa。

[单选题]我国煤气管道设计推荐DN800的焦炉煤气管道壁厚应为多少mm？（）

[判断题]煤气管道的强度试验压力应低于严密性试验压力；高压煤气管道的试验压力应低于常压煤气管道。（）