公安执法监督，是指公民和社会组织对人民警察依法履行职责、行使职权的活动和遵守纪律的情况所实施的监督。 ( )
参考答案：错
There they met two Indian monks who were Buddhist masters and ______ as educators without salary. [ ]
A. were working
B. worked
C. have work
D. had worked
耐温耐湿涂料使用的环氧树脂乳液是用环氧树脂为原料制成的，含固量为（）.
A.70％
B.45％
C.10％
D.5％
