能更确切地反映肾脏的浓缩稀释功能的是()
A.尿素氮测定
B.内生肌酐清除率测定
C.氯化铵负荷试验
D.尿渗量测定
E.血清肌酐测定
参考答案:D
设函数z=f(x,v),v=φ(x,y),其中f,φ都有一阶连续偏导数,则等于()
A.A
B.B
C.C
D.D
根据句意用所给词的适当形式填空
1. There is a supermarket __________(call) Suguo near our school.
2. What is this sweater __________(make) of?
3. Let's buy some __________(tomato) and carrots.
4. I eat a lot of fruit now and I feel __________(health).
5. Mr Wu asked Simon and __________(I) to help __________(he).
6. What size are your __________(foot)?