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当前学科：安全工程
题目：
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凡属机械破碎筛分的粉尘大多符合()，特别是舍弃两端的粗大和细小尘粒以后。
A.正态分布
B.对数正态分布
C.威布尔分布
D.不确定的分布
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Every year just after Christmas the January Sales start．All the shops reduce their pricesand for two weeks，they are full of people looking for bargains．My husband and I do not nor-mally go to the sales as we don’t like crowds and in any case are short of money as we have tobuy lots of Christmas presents． Last year，however，I took my husband with me to the sales at the large shop in the centerof London．We both needed some new clothes and were hoping to find a television set．Whenwe got to station．So I left my husband and started looking around the shops．Unfortunately allthe clothes were in very large sizes and SO were not suitable for me．But I did buy．a televisionat a very cheap price，SO I felt quite pleased with myself． When I arrived at the station，my husband was not there．So I sat down in a nearby cafeto have a cup of tea．I quickly finished my tea when I saw my husband and went out to meethim．He looked very happy．Then I saw he Was carrying a large and heavy cardboard box．“Oh，dear!”I thought．Yes，we had no new clothes but two televisions．We shall not be going to the sales again． 根据以上内容，回答题。In January__________．
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