下列哪一项不属于流空现象的范畴()
A.施加90度脉冲
B.流空的血管呈黑色
C.在某些状态下流动液体还可表现为高信号
D.使用对比剂
E.流动血液的信号还与流动方向有关
参考答案:D
Read. Tick or cross. 读一读,打“√”或打“×”。
Today is Sunday. It's sunny. Sandy and I go to the Water Park (水上公 园). We fly a kite. It's Sandy's
kite. The kite fly high in the sky. A bird is in the tree. It's singing. Some flowers (一些花) are under the tree.
What a lovely day!
1. This Sunday is sunny. ( )
2. We fly a kite in the Water Park. ( )
3. This is my kite. ( )
4. A bird is singing. ( )
5. Some flowers are on the tree. ( )
进行组织结构设计时,要选择不同的部门结构模式,以下不属于部门结构模式的是()
A.直线职能制
B.常设机构
C.超事业部制
D.事业部制