皮皮学，免费搜题
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【单选题】
压铸件的精度比压铸模具精度低() 级。
A.
1-2
B.
2-3
C.
3-4
D.
4-5
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参考解析：
知识点：
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【单选题】在温度为T下，CaCO3(s)，CaO(s)，CO2(g)平衡系统的压力为p，已知它们之间存在反应CaCO3(s) = CaO(s) + CO2(g)，若向该平衡系统加入CO2(g)，当重新达平衡时，系统的压力（ ）。
A.
变大
B.
变小
C.
不变
D.
可能变大也可能变小
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【单选题】供热管道及其设施包敷保温层，主要目的是（）。
A.
防腐
B.
防潮
C.
减少热损失
D.
美观
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【单选题】某热力管网工程，架空管道保温棉毡厚12cm。项目部确定本工程施工质量控制的重点是管道焊接和保温，保温施工中，保温棉毡至少应分为______层施工。
A.
1
B.
2
C.
3
D.
4
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【单选题】若线路上存在翻越点,但设计中没有考虑,管道投产后其输量 。
A.
一定为零
B.
小于设计输量
C.
大于设计输量
D.
无法确定
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【单选题】— Can you imagine that we've translated 30% of the long article today? — _____. You're so smart and quick! [     ]
A.
It's a pleasure
B.
I don't mind
C.
That's it
D.
I can't believe it
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【简答题】管道外部加保温层的目的是（）管道的热阻，（）热量的传递
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【单选题】Imagine being laid up in a hospital and, as you're wheeled down the sterile hallway, along strolls a three-foot-tall horse wearing yellow rubber booties and a backpack full of daisies. No, you're not ...
A.
doctors like pets and want to keep them where they work.
B.
evidence shows that pets help patients recover.
C.
patients can help train and register these pets.
D.
some experiments need these pets.
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【简答题】阅读理解。 Imagine you're at a party full of strangers. You're nervous. Who are these people? How do you start a conversation? Fortunately, you've get a thing that sends out energy at tiny chips in everyon...
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【判断题】管道外部加保温层的目的是减少管道的热阻，增强热量的传递。
A.
正确
B.
错误
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【简答题】Imagine you’re at a party full of strangers. You’re nervous. Who are these people? How do you start a conversation? Fortunately, you’ve got a thing that sends out energy at tiny chips in everyone’s na...
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相关题目：
【单选题】在温度为T下，CaCO3(s)，CaO(s)，CO2(g)平衡系统的压力为p，已知它们之间存在反应CaCO3(s) = CaO(s) + CO2(g)，若向该平衡系统加入CO2(g)，当重新达平衡时，系统的压力（ ）。
A.
变大
B.
变小
C.
不变
D.
可能变大也可能变小
查看完整题目与答案
【单选题】供热管道及其设施包敷保温层，主要目的是（）。
A.
防腐
B.
防潮
C.
减少热损失
D.
美观
查看完整题目与答案
【单选题】某热力管网工程，架空管道保温棉毡厚12cm。项目部确定本工程施工质量控制的重点是管道焊接和保温，保温施工中，保温棉毡至少应分为______层施工。
A.
1
B.
2
C.
3
D.
4
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【单选题】若线路上存在翻越点,但设计中没有考虑,管道投产后其输量 。
A.
一定为零
B.
小于设计输量
C.
大于设计输量
D.
无法确定
查看完整题目与答案
【单选题】— Can you imagine that we've translated 30% of the long article today? — _____. You're so smart and quick! [     ]
A.
It's a pleasure
B.
I don't mind
C.
That's it
D.
I can't believe it
查看完整题目与答案
【简答题】管道外部加保温层的目的是（）管道的热阻，（）热量的传递
查看完整题目与答案
【单选题】Imagine being laid up in a hospital and, as you're wheeled down the sterile hallway, along strolls a three-foot-tall horse wearing yellow rubber booties and a backpack full of daisies. No, you're not ...
A.
doctors like pets and want to keep them where they work.
B.
evidence shows that pets help patients recover.
C.
patients can help train and register these pets.
D.
some experiments need these pets.
查看完整题目与答案
【简答题】阅读理解。 Imagine you're at a party full of strangers. You're nervous. Who are these people? How do you start a conversation? Fortunately, you've get a thing that sends out energy at tiny chips in everyon...
查看完整题目与答案
【判断题】管道外部加保温层的目的是减少管道的热阻，增强热量的传递。
A.
正确
B.
错误
查看完整题目与答案
【简答题】Imagine you’re at a party full of strangers. You’re nervous. Who are these people? How do you start a conversation? Fortunately, you’ve got a thing that sends out energy at tiny chips in everyone’s na...
查看完整题目与答案