对鉴别上、下尿路感染最有意义的是()。
A.尿路刺激症状
B.肾小管浓缩功能
C.尿中白细胞管型
D.高热、腰痛
E.尿细菌培养
参考答案:C
土袋围堰的堰顶宽度可为( )。
A.3~5m
B.1~2m
C.5~8m
D.2~5m
Li Ming has the key to our class, and he often comes to school _____. [ ]
A. early
B. earliest
C. much earlier
D. earlier