题目内容

It can be inferred from the passage that

A. there is no link between greenhouse gas emissions and destructive storms
B. reduction of greenhouse gas emissions may reduce destructive storms
C. the higher percentage of strong ones rose as more hurricanes appeared
D. past records on hurricanes included everything needed

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如果大肠杆菌用¹⁴C-甲硫氨酸标记几秒钟，放射性参入DNA。这表明了什么，它有何意义？

A.Ability to gather information on the Internet.B.Skills to make judgment on the

Ability to gather information on the Internet.
B. Skills to make judgment on the online information.
C. Knowledge of reading and writing.
D. Capacity of communicating online.

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混悬型气雾剂为（）

A. 一相气雾剂
B. 二相气雾剂
C. 三相气雾剂
D. 吸人粉雾剂
E. 喷雾剂

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关于沉入桩准备工作，说法错误的是（）。

A. 沉桩前应掌握工程地质钻探资料、水文资料和打桩资料
B. 处理地上(下)障碍物，平整场地，并应满足沉桩所需的地面承载力
C. 在城区、居民区等人员密集的场所应根据现场环境状况采取降低噪声措施
D. 用于地下水有侵蚀性的地区或腐蚀性土层的钢桩应按照设计要求做好防腐处理

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It can be inferred from the passage that

A. there is no link between greenhouse gas emissions and destructive storms B. reduction of greenhouse gas emissions may reduce destructive storms C. the higher percentage of strong ones rose as more hurricanes appeared D. past records on hurricanes included everything needed

如果大肠杆菌用14C-甲硫氨酸标记几秒钟，放射性参入DNA。这表明了什么，它有何意义？

A.Ability to gather information on the Internet.B.Skills to make judgment on the

混悬型气雾剂为 （）

关于沉入桩准备工作，说法错误的是（）。

A. there is no link between greenhouse gas emissions and destructive storms
B. reduction of greenhouse gas emissions may reduce destructive storms
C. the higher percentage of strong ones rose as more hurricanes appeared
D. past records on hurricanes included everything needed

如果大肠杆菌用¹⁴C-甲硫氨酸标记几秒钟，放射性参入DNA。这表明了什么，它有何意义？

混悬型气雾剂为（）