X线照片上所指的关节间隙,代表解剖学上的()
A.关节腔
B.关节囊
C.关节软骨
D.关节囊和关节腔
E.关节腔和关节软骨
参考答案:E
—— Have you ever seen anything like that before?
---- ____.
A.No,I never have seen anything like that before
B.No,never I have seen anything like that before
C.No,never have 1 seen anything like that before
D.No,I have seen anything like that before never
48伏中达开关电源浮充电压为()
A.54V
B.44V
C.56.4V