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【单选题】
尿潴留患者间歇性清洁导尿的时间间隔是A.
A.1～２小时
B.
Ｂ．２～４小时
C.
Ｃ．４～６小时
D.
Ｄ．６～８小时
E.
Ｅ．８～１０小时
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【简答题】Now, we know that if we do not get enough vitamins, we are at the risk of developing a number of diseases. As a result, vitamin supplements( 补品 ), though expensive, are popular with people who worry t...
【单选题】From the passage we know that ammonium nitrate is a kind of ______.
A.
natural gas, which can easily catch fire
B.
fertilizer, which can't be stored in a great quantity
C.
poisonous substance, which can't be used in overcrowded areas
D.
fuel, which is stored in large tanks
【简答题】阅读理解。 Now, we know that if we do not get enough vitamins, we are at risk of developing a number of diseases. As a result, vitamin supplements (补品), though expensive, are popular with people who worry ...
【简答题】列举出四种服饰传播的表现形式。
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