中等量心包积液时可见的X线征象为()
A.心影普遍增大
B.上纵隔影变短变宽
C.心尖搏动减弱或消失
D.主动脉搏动正常
E.肺纹理正常或减少
参考答案:A, B, C, D, E
This chemical works _____.
A.is rebuilding
B.is being rebuilt
C.are being rebuilt
D.is being rebuilt
从业者从事职业的态度是价值观、道德观的具体表现。