外科手术中,常温下一次阻断入肝血流的时间一般不应超过()
A.20~25分钟
B.15~20分钟
C.5~10分钟
D.25~30分钟
E.30~35分钟
参考答案:B
After being brought up in the countryside for a decade, the daughter returned to the big city, ________ worked his parents.
A.which
B./
C.where
D.when
不符合营养性缺铁性贫血第一阶段的化验指标是
A.血清总铁结合力增高
B.血清铁降低
C.血红蛋白正常
D.血清铁蛋白降低
E.血红蛋白降低