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【单选题】
下列关于空气滤清器的陈述中哪个陈述是正确的？（ ）
A.
当空气滤清器变脏并堵塞时，吸入空气很难，空调效果变差
B.
空气滤清器安装在空气出口附近
C.
如果定期清理，空气滤清器不需要更换
D.
没有专用工具，空气滤清器不能拆除
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参考答案：
举一反三
【单选题】The simple comparative advantage model assumed that trade: 简单比较优势模型假设贸易:
A.
changes efficiency with which a country utilizes resources.改变一个国家利用资源的效率。
B.
changes a country's stock of resources.改变一个国家的资源存量。
C.
allows for dynamic changes in the marketplace.允许市场的动态变化。
D.
does not change a country's stock of resources.不会改变一个国家的资源存量。
查看完整题目与答案
【简答题】生产特殊性质的药品,如 或 必须采用专用和独立的厂房、生产设施和设备。
查看完整题目与答案
【单选题】The dynamic gains from trade include all of the following except:
A.
Economies of large-scale production resulting in decreasing unit cost
B.
Increased saving and investment resulting in economic growth
C.
Increased competition resulting in lower prices and wider range of output
D.
Increasing comparative advantage leading to specialization
查看完整题目与答案
【简答题】Complete the sentences with the correct form of the words. (用所给单词的正确形式填空。) 3). In difficult situations it’s important to be _________________ rather than aggressive. (assert)
查看完整题目与答案
【判断题】作中段尿培养，宜在用抗生素5天后收集标本。
A.
正确
B.
错误
查看完整题目与答案
【单选题】The social arrangement that gives John Grisham, the writer of best-selling novels, the ownership of his novels is (畅销小说作家约翰·格里沙姆(John Grisham)对他的小说的所有权的社会安排是——中文由在线翻译而来,仅供参考)
A.
a market.市场。
B.
property rights.财产权。
C.
absolute advantage.绝对优势。
D.
dynamic comparative advantage.动态比较优势。
查看完整题目与答案
【简答题】Andrew: When we get older, it’s more difficult to change. Older people don’t want to change their thinking or their lifestyle.They like things to stay the same.Franco: ( ) . I think older people can ...
查看完整题目与答案
【判断题】作中段尿培养,宜在用抗生素 5 天后收集标本。
A.
正确
B.
错误
查看完整题目与答案
【判断题】作中段尿培养，宜在用抗生素5天后收集标本。（）
A.
正确
B.
错误
查看完整题目与答案
【单选题】T he reasons for imports vary from country to country. Let's explore why a country like the United States, with its massive and extraordinarily diverse economy, would need to import anything from othe...
A.
countries need to - or choose to import at least some goods and services
B.
different countries have comparative advantages on different products
C.
exports are also more than just an outlet for “ excess ” production
D.
it has the capability of producing the goods or supplying the services
E.
it comes closer to being self-sufficient than most other countries
F.
sell goods or services to other countries at prices higher than the prices
查看完整题目与答案
相关题目：
【单选题】The simple comparative advantage model assumed that trade: 简单比较优势模型假设贸易:
A.
changes efficiency with which a country utilizes resources.改变一个国家利用资源的效率。
B.
changes a country's stock of resources.改变一个国家的资源存量。
C.
allows for dynamic changes in the marketplace.允许市场的动态变化。
D.
does not change a country's stock of resources.不会改变一个国家的资源存量。
查看完整题目与答案
【简答题】生产特殊性质的药品,如 或 必须采用专用和独立的厂房、生产设施和设备。
查看完整题目与答案
【单选题】The dynamic gains from trade include all of the following except:
A.
Economies of large-scale production resulting in decreasing unit cost
B.
Increased saving and investment resulting in economic growth
C.
Increased competition resulting in lower prices and wider range of output
D.
Increasing comparative advantage leading to specialization
查看完整题目与答案
【简答题】Complete the sentences with the correct form of the words. (用所给单词的正确形式填空。) 3). In difficult situations it’s important to be _________________ rather than aggressive. (assert)
查看完整题目与答案
【判断题】作中段尿培养，宜在用抗生素5天后收集标本。
A.
正确
B.
错误
查看完整题目与答案
【单选题】The social arrangement that gives John Grisham, the writer of best-selling novels, the ownership of his novels is (畅销小说作家约翰·格里沙姆(John Grisham)对他的小说的所有权的社会安排是——中文由在线翻译而来,仅供参考)
A.
a market.市场。
B.
property rights.财产权。
C.
absolute advantage.绝对优势。
D.
dynamic comparative advantage.动态比较优势。
查看完整题目与答案
【简答题】Andrew: When we get older, it’s more difficult to change. Older people don’t want to change their thinking or their lifestyle.They like things to stay the same.Franco: ( ) . I think older people can ...
查看完整题目与答案
【判断题】作中段尿培养,宜在用抗生素 5 天后收集标本。
A.
正确
B.
错误
查看完整题目与答案
【判断题】作中段尿培养，宜在用抗生素5天后收集标本。（）
A.
正确
B.
错误
查看完整题目与答案
【单选题】T he reasons for imports vary from country to country. Let's explore why a country like the United States, with its massive and extraordinarily diverse economy, would need to import anything from othe...
A.
countries need to - or choose to import at least some goods and services
B.
different countries have comparative advantages on different products
C.
exports are also more than just an outlet for “ excess ” production
D.
it has the capability of producing the goods or supplying the services
E.
it comes closer to being self-sufficient than most other countries
F.
sell goods or services to other countries at prices higher than the prices
查看完整题目与答案
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