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【单选题】
下列各数中有效数字位数为四位的是( )。A.
0.0001
B.
C.
pH=4.462
D.
w CaO =25.30%
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举一反三
【简答题】Who can help students find appropriate courses? ______ can help students find appropriate courses.
【简答题】纱线的连接方式有（）和（）两种方法，在捻接中技术比较成熟应用比较广泛的是空气捻接和机械捻接。
【单选题】The fashion retail brands such as Gap and Topshop can be included into the level of .
A.
mass market
B.
value fashion
C.
high-end fashion
D.
middle market
【多选题】How many phrases with fashion can you think of?
A.
Fashion designer
B.
Fashion magazine
C.
Fashion plate
D.
Fashion victim
【单选题】The passage mentions the advantages of fashion EXCEPT that
A.
it can help promote technological development.
B.
it enables people to remain up-to-date.
C.
it can create more job opportunities for people.
D.
it can make people achieve a great feeling.
【简答题】A．It can help you make more money. B．It can help you build the life you want. C．It can help you build a good family. D．It can help you make more friends.
【简答题】纱线的连接方式有 和 两种方法,在捻接中技术比较成熟应用比较广泛的是 和 。
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