规范精神科医生行为的是
A.《赫尔辛基宣言》 B.《夏威夷宣言》 C.《希波克拉底誓言》 D.《大医精诚》 E.《纪念白求恩》
参考答案:B
When the Eiffel Tower was shown in 1889 at the world exposition, it was not very popular and came
close to ______ down.[ ]
A. be torn
B. tear
C. tearing
D. being torn
冶炼时,RH钢水温度越高铝收得率越高。