如果调查应答率至少为总样本的85%,那么实际应调查的样本量为()。
A.n/(1+85%)
B.n/(1-85%)
C.n/85%
D.n×85%
E.n/85%/α
参考答案:C
句型转换.
1. I think he will come on time.(改为否定句)
_____________________________________________.
2. "I'm typing a letter to my pen pal," Linda says.(改为间接引语)
Linda said that_____________________________.
3.Jack does well in playing basketball.(同义句转换)
Jack ____________________________at playing basketball.
4. "Why do you think it's a good idea? "I asked Lucy.(改为间接引语)
I asked Lucy why she___________________________.
5. He doesn't want to eat anything.(改为间接引语)
He said he_______________________________________________.
患者,男性,35岁。既往有胆道结石病史,半小时前突发上腹部绞痛,并高热寒战、恶心呕吐,现神志淡漠,诊断为急性梗阻性化脓性胆管炎,拟行紧急手术。
术后有关T型管护理的说法错误的是()。
A.应每日更换1次外接的连接管和引流瓶
B.一般术后6~8天即可拔管
C.拔管后局部伤口用凡士林纱布堵塞即可,1~2天会自行封闭
D.拔管前应在X线下经T型管做胆道造影,且造影后必须立即接好引流管继续引流2~3天
E.妥善固定,保持通畅,改变体位或活动时注意引流管的高度不超过腹部切口高度