题目内容

有害气体净化方法大致分为洗涤法、吸附法、袋滤法、静电法、燃烧法和高空排放法。下列关于确定净化方案的原则不正确的是()。

A. 有害物质的成分、含量和毒性等理化指标只有在设计完成后才能确定,设计前无法确定
B. 确定有害物质的净化目标和综合利用方向,应符合卫生标准和环境保护标准的规定
C. 净化设备的工艺特性,必须与有害介质的特性相一致
D. 落实防火、防爆的特殊要求

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听力原文： Prison service staff in Britain have been severely criticized in an official report for the escape of five IRA prisoners and an armed robber from White mall Prison, Cambridge shire. Bomb-making equipment was subsequently discovered at the jail. The government has announced a major review of prison security throughout England and Wales. A new task force will be set up under the Home Office and a detailed list of recommendations is expected to be issued at the end of the year.
The number of the escaped prisoners is ______.

A. 6.
B. 5.
C. 1.
D. 7.

中国房地产估价师学会的主要职责包括()。
①开展房地产估价理论和方法的研究
②协助政府有关部门进行房地产估价师考试
③注册房地产估价机构资质等级评定
④组织房地产估价专业培训和注册房地产估价师继续教育
⑤制定房地产估价行业标准、规范
⑥调节房地产估价纠纷
⑦开展国际学术交流

A. ①②③④⑤⑥⑦
B. ①②④⑤⑥⑦
C. ②③④⑤⑥⑦
D. ①③④⑤⑥⑦

Tests have proved that caffeine affects the body by increasing the heart rate and rhythm,

A. in the long run
B. in turn
C. in return
D. as a result

Children going to school must have a chance to______ excess physical energy; children even

A. work off
B. let off
C. play off
D. put off