焦炭产率过高,使催化剂的()性降低。
A.活
B.抗污染
C.稳定
D.再生
参考答案:A
— What club does Jack want to join?
— The art club.
— ______?
— I think so. [ ]
A. Can he paint well
B. Does he paint well or bad
C. What can he do in the club
D. Do you like the art club, either
微倾水准仪精平操作是旋转望远镜微倾螺旋使水准管的气泡居中,符合影像符合。