单项选择题
密闭式回血下机血液流量应调为()
A.20~50ml/min
B.50~100ml/min
C.100~150ml/min
D.150~180ml/min
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单项选择题
A.20~50ml/min
B.50~100ml/min
C.100~150ml/min
D.150~180ml/min
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