在临床上经常见到纵隔向健侧移位,以下病变不能引起纵隔向健侧移位()
A.肺广泛纤维化
B.一侧气胸
C.一侧胸腔积液
D.主支气管不完全狭窄
E.膈疝
参考答案:A
We can see the sun ________ day, but we can't see ________ night. [ ]
A. in, at
B. in the, at
C. in, at the
D. at, in the
小明同学用分度值是1mm的刻度尺,测量一个保温水瓶的高度,下面的记录结果中,正确的是( )
A.0.244m
B.2.44dm
C.24.45cm
D.244mm