胰腺手术后出血时，宜选用（）
A.维生素K
B.硫酸鱼精蛋白
C.氨甲环酸
D.硫酸亚铁
E.右旋糖酐铁
参考答案：C
This building is too old and dangerous. It should _ __ dowm [ ]
A. to pull
B. pull
C. is pulled
D. be pulled
[C++代码]
