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【判断题】
在多肽分子中只存在一种共价键即肽键A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】关于钙锌稳定剂描述中,错误的是( )
A.
无毒且具有良好润滑性
B.
通常分为固体钙锌与液体钙锌稳定剂
C.
由钙盐、锌盐、润滑剂、抗氧剂等为主要组分采用特殊复合工艺而合成
D.
其热稳定性、透明性比铅镉盐类和有机锡类好
【简答题】The Sultana was a Mississippi River steamboat destroyed in an explosion on April 27, 1865. An (1) __________1,800 of the 2,400 passengers were killed, and the Sultana sank not far from Memphis, Tenne...
【单选题】以下内容不属于模板工程基本要求的是( )。
A.
高大模板支架工程的专项施工应进行技术论证
B.
应根据施工中各种工况对模板和支架进行设计
C.
模板接缝应严密
D.
应首选选择质量轻的模板
【单选题】听力原文：Woman: You look so worried, what's wrong with you? Man: There was an accident. My son is fine, but my wife was badly injured. Q: What do we know from the conversation? (2)
A.
His son was badly injured.
B.
His wife was not seriously injured.
C.
Both his son and his wife were badly injured.
D.
Only his wife was seriously injured.
【单选题】Speaker A: You look so bad. What's wrong with you? Speaker B: .
A.
I'm OK.
B.
I have a bad cold.
C.
I feel good.
【单选题】读下图,回答1~3题。 人类历史上第一位太空使者--加加林说,从太空看地球是个蔚蓝色的美丽星球,它看 上去更像“水球”。这是因为世界上海陆面积之比约为 ( )
A.
1∶1
B.
7∶3
C.
3∶1
D.
3∶2
相关题目：
【单选题】以下内容不属于模板工程基本要求的是( )。
A.
高大模板支架工程的专项施工应进行技术论证
B.
应根据施工中各种工况对模板和支架进行设计
C.
模板接缝应严密
D.
应首选选择质量轻的模板
参考解析：
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