复数满足z(1+i)=2i,则复数z的实部与虚部之差为[ ]
A.-2
B.2
C.1
D.0
答案:D
阅读文章,判断正误,正确的写T,错误的写F。
I have two new friends, they are Sammi and Pat. Sammi is a girl. She is twelve. She is short and slim. She
is from England. She is English. Pat is a boy, he is twelve too. He is tall and strong. He is from America. He is
American.They are very kind (善良).
( )1. Sammi is from England, but she is not kind.
( )2. Pat is from England and he is very kind.
( )3. Sammi and Pat are both (都) twelve.
( )4. Pat is strong and slim.
( )5.Sammi is short and strong.
下面哪项一般不是颅脑MRI检查的适应证()
A.颅脑肿瘤
B.脑血管病
C.颅脑外伤
D.胎儿脑体积测量
E.颅内感染与炎症