According to David Wedin, the extinction of many species are caused by human beings'
A.arrogance.
B.ignorance.
C.nonchalance.
D.blunder.
第4题
血栓和止血常用筛选试验中,属体内试验的是 ()
A、BT
B、CRT
C、PT
D、CT
E、APTT
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