题目内容

环境监测可以分为哪几类？

A. 常规性监测
B. 监视性监测
C. 特定目的性监测
D. 研究性监测

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环境监测的手段有哪些？

A. 化学
B. 物理
C. 生物
D. 物理化学
E. 生物化学

环境监测的对象有哪些？

A. 空气
B. 水体
C. 土壤
D. 固体废弃物

固体废物是指在生产、生活或日常活动过程中被人们抛弃的，没有利用价值的固态物质。

A. 对
B. 错

What was Churchill's attitude towards Britain's home defense against invasion?On the one hand, he was _____ because the British military forces concentrated in Britain were stronger than ever. On the other hand, home defense still needed , as Britain must fight back and fight overseas, which would draw troops away from Britain.