正常人昼夜尿量之比是()
A.2:1
B.1:(3~4)
C.(3~4):1
D.1:1
E.1:2
参考答案:C
Our plane()from London at 7:00 yesterday evening.
A.took off
B.put off
C.flew off
D.left off
地物分类根据当地规划区经济发展情况,可将规划区分成四类,即:()
A.密集城区
B.一般城区
C.郊区
D.农村地区