题型:问答题 简答题 Did you enjoy the days you spent in Beijing during the Spring Festival? [ ]A. where B. when C. that D. what 查看答案
题型:问答题 简答题 关于体层摄影,下列说法正确的是()。A.人体不动,X线管、胶片反向运动B.X线管不动,人体、胶片反向运动C.胶片不动,X线管、人体同向运动D.人体不动,X线管、胶片同向运动E.胶片不动,X线管、人体反向运动 查看答案