抽空处理的条件和参数主要有真空度、()、抽气时间和()。

题型:填空题

问题:

抽空处理的条件和参数主要有真空度、()、抽气时间和()。

考点:食品科学技术果蔬加工工艺学果蔬加工工艺学题库
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电视剧“大染坊”中有一个天天吃白面的师傅,这人时间长了易患(  )

A.坏血病

B.脚气病

C.夜盲症

D.佝偻病

题型:填空题

B

Many people catch a cold in the springtime or fall. It makes us wonder. If scientists can send a man to the moon, why can’t they find a way to deal with the common cold? The answer is easy. There are actually hundreds of kinds of cold viruses out there. You never know which one you will get, so there isn’t a cure for each one.

When a virus attacks your body, your body works hard to get rid of it. Blood rushes to your nose and brings congestion(拥塞)in it. That is to say, you cannot breathe well. As a result, you feel terrible. However, your body is actually “eating” the virus. Your temperature rises and you get a fever, but the heat of your body is also killing the virus. Besides, you have a runny nose to stop the virus from getting into you. You may feel terrible, but in fact your wonderful body is doing everything it can to kill the cold.

Different people have different ways to deal with common colds. In the United States and some other countries, for example, people might eat chicken soup to feel better. Some people take hot baths; some drink warm water, milk, or things like that; other people take medicine to stop the fever, congestion, and runny nose.

Some scientists suggest you should not take medicine when having a common cold, saying that it is bad for you to do that. If you take medicine, your body will stop reacting to the virus and thus won’t have a way to fight it and kill it, which makes the virus stay in you longer. Bodies can do an amazing job on their own.

56. According to the passage, what makes us wonder?

A. Why we never know which cold we will get.

B. Why scientists are able to send a man to the moon.

C. Why scientists cannot find a cure for the common cold.

D. Why there are hundreds of kinds of cold viruses out there.

57. Which of the following is NOT mentioned in the passage when we are suffering from colds?

A. Fever.       B. Headache.      C. Runny nose.       D. Congestion.

58. When you have congestion in your nose, ________.

A. you will not be able to breathe well

B. your temperature is going to rise

C. your blood is running too fast

D. you will have a runny nose

59. According to the passage, people may deal with common colds in different ways EXCEPT ________.

A. taking medicine   B. taking hot baths   C. eating chicken soup   D. drinking alcohol

60. Some scientists advise you not to take medicine when you have a common cold because _______.

A. your body will fight and kill the virus on its own

B. your body will probably react too much to the virus

C. it will take longer time for your body to get over the virus

D. it will not be able to stop the fever, congestion or runny nose

题型:填空题

机器零件的有形磨损过程大致可以分为三个阶段,其中第一个阶段和第三个阶段磨损比较快,中间的阶段磨损比较慢。()

题型:填空题

封闭式基金份额要达到上市交易的条件,基金合同期限应该在()以上。

A.3年

B.5年

C.10年

D.20年

题型:填空题

以下哪种情况下,能使应急灯点亮()。

A.驾驶舱应急灯电门在“预位”位,客舱应急灯“正常”位,直流汇流条无电或电压低于12V时;

B.驾驶舱应急灯电门在“关断”位,客舱应急灯电门在“接通”位;

C.驾驶舱应急灯电门在“关断”位,客舱应急灯电门在“正常”位;

D.驾驶舱应急灯电门在“接通”位,客舱应急灯电门在“正常”位。

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