引起尿瘘的原因有()
A.分娩时由于骨盆狭窄软产道受压过久
B.产钳术损伤软产道
C.慢性咳嗽
D.长期便秘
E.手术因解剖层次不清误伤膀胱
参考答案:A, B, E
已知复数z满足(z-2)i=a+i(a∈R)。
(1)求复数z;
(2)a为何值时,复数z2对应点在第一象限。
根据句意及汉语提示填写单词。
1. I like the color of ____________ (紫色). What about you?
2. I got a ______________ (包裹) from my uncle yesterday.
3. Look! Some boys are ____________ (荡秋千) on the playground.
4. Lucy and other girls made a pretty castle with ______________ (沙子).
5. Jerry threw the ball _______________ (高地) into the air.