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【单选题】
当前，蛋白质工程是发展较好、较快的分子工程。它将蛋白质与酶的研究推进到崭新的时代，为蛋白质和酶在工业、农业和医药方面的应用开拓了诱人的前景。蛋白质工程开创了按照人类意愿改造、创造符合人类需要的蛋白质的新时期。那么，蛋白质工程中需要直接进行操作的对象是（）
A.
氨基酸结构
B.
蛋白质空间结构
C.
肽链结构
D.
基因结构
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参考答案：
举一反三
【单选题】My father is busy _________ his work.
A.
to do
B.
doing
C.
do
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【简答题】听录音，选出与你所听到的句子意义相同或相近的一个选项，每个句子读两遍。 (     )1. A. My father is busy every day. B. My father is busy on Sunday. C. My father is free every day. D. My father is free on Sunday. (     )2. A. The movie the...
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【单选题】My father is busy ______ his work. I think he can finish ______ it in an hour.
A.
make; to do
B.
doing; doing
C.
to do; to make
D.
. making; do
查看完整题目与答案
【判断题】轴承外圈和轴承座体一般采用过盈配合。
A.
正确
B.
错误
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【简答题】选词填空 reduce stress eat fast food have no time be good for at least 1.A grown-up should get _________ eight hours of sleep every day. 2.I like to __________ and drink a lot of coke. 3.My...
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【简答题】冲裁工艺分析包含哪些方面? 2、 基本冲压工序的组合有哪些? 3、冲裁工艺的工序组合方式根据什么来确定?
查看完整题目与答案
【简答题】Complete the following sentences with the proper form of the given phrases. reduce stress eat fast food have no time be good for lose weight at least 1. A grown-up should get ...
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【简答题】根据汉语提示完成句子。 1. 我父亲一直很忙。 My father is busy ____ ____ ____ . 2. 我一坐在电视机前,妈妈就过来了。 ____ ____ ____ I sat down in front of the TV,my mom came over. 3. 就在我写作业的时候,电话铃响了。 ____ I was doing my homework,the t...
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【判断题】( )武夷岩茶是闽北乌龙茶的代表。
A.
正确
B.
错误
查看完整题目与答案
【简答题】冲裁工艺的工序组合方式根据什么来确定?
查看完整题目与答案
相关题目：
【单选题】My father is busy _________ his work.
A.
to do
B.
doing
C.
do
查看完整题目与答案
【简答题】听录音，选出与你所听到的句子意义相同或相近的一个选项，每个句子读两遍。 (     )1. A. My father is busy every day. B. My father is busy on Sunday. C. My father is free every day. D. My father is free on Sunday. (     )2. A. The movie the...
查看完整题目与答案
【单选题】My father is busy ______ his work. I think he can finish ______ it in an hour.
A.
make; to do
B.
doing; doing
C.
to do; to make
D.
. making; do
查看完整题目与答案
【判断题】轴承外圈和轴承座体一般采用过盈配合。
A.
正确
B.
错误
查看完整题目与答案
【简答题】选词填空 reduce stress eat fast food have no time be good for at least 1.A grown-up should get _________ eight hours of sleep every day. 2.I like to __________ and drink a lot of coke. 3.My...
查看完整题目与答案
【简答题】冲裁工艺分析包含哪些方面? 2、 基本冲压工序的组合有哪些? 3、冲裁工艺的工序组合方式根据什么来确定?
查看完整题目与答案
【简答题】Complete the following sentences with the proper form of the given phrases. reduce stress eat fast food have no time be good for lose weight at least 1. A grown-up should get ...
查看完整题目与答案
【简答题】根据汉语提示完成句子。 1. 我父亲一直很忙。 My father is busy ____ ____ ____ . 2. 我一坐在电视机前,妈妈就过来了。 ____ ____ ____ I sat down in front of the TV,my mom came over. 3. 就在我写作业的时候,电话铃响了。 ____ I was doing my homework,the t...
查看完整题目与答案
【判断题】( )武夷岩茶是闽北乌龙茶的代表。
A.
正确
B.
错误
查看完整题目与答案
【简答题】冲裁工艺的工序组合方式根据什么来确定?
查看完整题目与答案
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