比较各种防护材料屏蔽效果的参量是()
A.铅当量
B.铝当量
C.铜当量
D.钨当量
E.锡当量
参考答案:A
__________ the global financial crisis, the Chinese government has taken many measures _______ people ‘s life to deal with it.
A.Faced with; related
B.Faced; relating to
C.Faced with; relating
D.Facing, related to
某患者尿素的清除率为80ml/min,菊粉清除率为125ml/min,两者有差异,其原因为()
A.肾小球滤过率增加
B.肾小管可以对尿素进行重吸收
C.肾小球滤过率减少
D.肾小管重吸收功能减弱
E.以上均不是