产后3天,下述哪项不属于正常产褥现象()
A.褥汗多
B.低热
C. * * 胀痛,双腋窝硬结
D.腹部阵发性绞痛,伴呕吐
E.少量 * * 流血
参考答案:D
Her brother likes______ and______.
A.running; watching TV
B.running; watch TV
C.run; watch TV
D.runing; watching TV
尽量随机地选择人群可以控制的偏倚是()
A.选择偏倚
B.信息偏倚
C.混杂偏倚
D.报告偏倚
E.失访偏倚