我国的国家预算体系共有()级预算。
A.三
B.四
C.五
D.六
参考答案:C
-The old man living in the opposite street passed away.
-_________? I saw him yesterday. [ ]
A. How about
B. What about
C. How come
D. What so
冲洗肠瘘瘘口每天需要的等渗盐水量约为()
A.1000~2000ml
B.2000~3000ml
C.3000~5000ml
D.5000~6000ml
E.6000~8000ml