脑梗塞的坏死液化期,CT表现为()
A.低密度,边界模糊
B.低密度,边界清楚
C.等密度,边界模糊
D.等密度,边界清楚
E.混杂密度,边界清楚
参考答案:B
The public insisted on the government____ immediate action against corruption. [ ]
A. must take
B. should take
C. to take
D. taking
改变加热炉炉管冷油流速的措施有()。
A.更改炉管管径
B.注水
C.注汽
D.改变炉管管程数