确保没有溶剂在发动机尾喷管附近。 A: Make sure that solvents are not near the engine exhaust. B: Make sure that solvents are outside the engine exhaust. C: Make sure that solvents are not in close proximity to the engine exhaust. D: Do not leave solvents in the vicinity of the engine exhaust.

Which of the following statements about the paints is not true？ A: The paints are a kind of liquid preparations. B: The paints are generally used via oral administration. C: The paints can form a film after application on the affected area. D: The paints contain volatile organic solvents in their formulations.

绿色化学的十二条原则是什么？ A: 能量效率设计(design for energy efficiency) B: 催化(catalysis) C: 预防（prevention) D: 减少衍生物(reduce derivatives) E: 低毒化学合成（less hazardous chemical synthesis） F: 安全的溶剂和助剂（ater solvents and auxiliaries） G: 本身安全、能防止意外事故的化学(inherently safer chemistry for accident prevention) H:使用可再生原料(use renewable feedstocks) I:防止污染的快速分析(real-time analysis for pollution prevention) J:原子经济性（atom economy） K:设计安全化学品(designing safer chemicals) L:降解设计(design for degradation)

绿色化学的十二条原则是什么？ A: 预防（prevention) B: 原子经济性（atom economy） C: 低毒化学合成（less hazardous chemical synthesis） D: 设计安全化学品(designing safer chemicals) E: 安全的溶剂和助剂（ater solvents and auxiliaries） F: 能量效率设计(design for energy efficiency) G: 使用可再生原料(use renewable feedstocks) H: 减少衍生物(reduce derivatives) I: 催化(catalysis) J: 降解设计(design for degradation) K: 防止污染的快速分析(real-time analysis for pollution prevention) L: 本身安全、能防止意外事故的化学(inherently safer chemistry for accident prevention)