急性肾衰病人由少尿期进入多尿期标志是24小时尿量增加至（）
A.300ml
B.400ml
C.500ml
D.700ml
E.800ml
参考答案：B
--Did you _______ to New York City with your mother?
--No, I _______ there with my friends.
A．go; go
B．went; went
C．go; went
D．went; go
小机无法调速有哪些原因？
