我国设备更新工作应遵循的原则之一是（）
A.提高工作质量
B.讲究经济效益
C.改善加工环境
D.增加设备数量
参考答案：B
用所给词的适当形武填空。
1. My sister is considering __________ (change) her job because of the low salary.
2. How many _______ (fall) have you seen?
3. This is an ________ (educate) book.
4. _________ (lucky) , my sister helped me with my housework.
5. After the flood, many people became ________ (home).
脑卒中各类型的诊断要点中，属于脑栓塞的是（）
A.常有神志障碍
B.必有神志障碍
C.多无神志障碍
D.可有神志障碍
E.多无头痛呕吐
