单项选择题

2012年4月29日，某淀粉厂的4号车间包装工段突然发生淀粉粉尘爆炸起火。一瞬间，停电停水，当时249名职工大部分被围困在火海之中。经及时抢救，多数职工脱离了危险区。
该厂的除尘系统采用布袋除尘，金属管道输送淀粉粉尘。事故导致整个除尘系统遭受严重破坏，部分厂房倒塌，车间内的大部分机器和电器设备损坏，企业停产，事故造成死亡29人，重伤3人，轻伤14人，直接经济损失300多万元。
根据以上场景，回答下列问题
该起事故中爆炸起火的粉尘属于（　　）

A.有机粉尘
B.无机粉尘
C.动物性粉尘
D.混合粉尘
E.人工合成有机粉尘
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单项选择题
2012年4月29日，某淀粉厂的4号车间包装工段突然发生淀粉粉尘爆炸起火。一瞬间，停电停水，当时249名职工大部分被围困在火海之中。经及时抢救，多数职工脱离了危险区。该厂的除尘系统采用布袋除尘，金属管道输送淀粉粉尘。事故导致整个除尘系统遭受严重破坏，部分厂房倒塌，车间内的大部分机器和电器设备损坏，企业停产，事故造成死亡29人，重伤3人，轻伤14人，直接经济损失300多万元。根据以上场景，回答下列问题根据《企业职工伤亡事故分类标准》，该起事故类别属于（ ）
A.瓦斯爆炸
B.火药爆炸
C.锅炉爆炸
D.容器爆炸
E.其他爆炸
未分类题
听力原文：W: Mr. White, What changes have you seen in the champagne market in the last ten to fifteen years?M: Well, the biggest change has been the decrease in sales since the great boom years of the 1980s when champagne production and sales reached record levels.W: Which was the best year?M: Well, the record was in 1989 when 249 million bottles of champagne were solD.The highest production level was reached in 1990 with a total of 293 million bottles. Of course since those boom years, sales have fallen.W: Has the market been badly hit by the recession?M: Oh, certainly. The economic problems in champagne's export markets, that's Europe, the United States, Japan, and of course, the domestic market in FrancE.The economic problems have certainly been one reason for the decrease in champagne sales.W: And the other reasons?M: Another important factor has been pricE.In the early 90s, champagne was very overpriced, so many people stopped buying it. Instead, they bought sparkling wines from other countries, in particular, from Australia, and Spain. And then, there was another problem for champagne in the early 90s.W: What was that?M: There was a lot of rather bad champagne on the market. This meant the popularity of good sparkling wines increased even morE.People were surprised by their quality, and of course they were a lot cheaper than champagnE.W: Do you think the champagne market will recover in the future?M: Oh, I'm sure it will. When the economic situation improves, I believe the market will recover.(20)A.It saw the end of its booming years worldwidE.B.Its production and sales reached record levels.C.It became popular in some foreign countries.D.Its domestic market started to shrink rapidly.
A.W:
B.
W:
C.
W:
D.
W:
E.
W:
F.
(20)
A.It
G.
B.Its
H.
C.It
I.
D.Its
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