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【单选题】
Polychlorinated biphenyls (PCBs) are organic compounds that were once used in industrial products such as paints and adhesives. However, open use of PCBs has been banned since 1970s, when it became clear that they have adverse environmental effects, particularly on wildlife populations. The compounds are toxic to many animal species, including birds, fish and mammals. PSBs also take an exceptional long time to degrade, so they are still a significant air and water pollutant. Fishing is still restricted in the Great Lakes district, for instance, because of the risk that contamination could be passed to humans. According to the paragraph, on top of their toxicity, why else are PCBs considered harmful to the environment?
A.
Because they contaminate soil.
B.
Because they contribute to global warming.
C.
Because they break down very slowly.
D.
Because they degrade organic matter.
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【判断题】用过的铬酸洗液应倒入废液缸,不能再次使用
A.
正确
B.
错误
【简答题】案例场景: 赵某是某系统集成公司的项目经理,负责某省科技厅情报研究所863项目的管理,该项目由多家单位共同完成,赵某所在的公司为总承包商,另有某理工大学计算机网络实验室负责网络方面的设计和开发,科技厅下属子公司负责UI方面的设计和开发,另有一家单位负责文档的整理。 在项目中,赵某发现项目干系人太多,沟通交流不方便,进度难以协调。虽然项目最终成功,但赵某觉得项目完成得不是很理想。 [问题1] 请分析...
【判断题】用过的铬酸洗液应倒入废液缸,不能再次使用。
A.
正确
B.
错误
【判断题】子曰:“君子求诸己,小人求诸人。”是指君子苛求所有人,小人苛求自己。
A.
正确
B.
错误
【判断题】子曰:“ 君子求诸己, 小人求诸人。” (判断此句是不是《论语》中的原句)
A.
正确
B.
错误
【简答题】子曰:“君子求诸己, 。”(《论语·卫灵公》)
【简答题】翻译:子曰:“君子求诸己,小人求诸人。”。
【简答题】子曰:君子求诸己,____。
【单选题】《论语》曰“为仁由己”,又说“君子求诸己,小人求诸人。”《商君书画策》说“自恃者,得天下。得天下者,先自得也”。这体现了()
A.
自强不息的民族精神
B.
爱好和平的民族精神
C.
勤劳勇敢的民族精神
D.
团结统一的民族精神
【单选题】子曰:“君子求诸己,( )”
A.
小人求诸人
B.
小人求诸言
C.
小人求诸利
D.
小人求诸谗
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