不宜做硬膜外麻醉的是()。
A.高血压、心脏病
B.低血容量休克
C.椎管内转移癌
D.妊娠高血压症
E.出凝血机制障碍
参考答案:B, C, E
If you go by ________ train,you can have quite a comfortable journey,but make sure you get ________ fast one.
A./;/
B./;a
C.the;a
D./;/
失绿症 chlorosis