单项选择题
A.14,17B.13,15C.12,15D.14,16
A.26B.30C.38D.44
A.100B.120C.140D.160
A.620B.720C.820D.680
A.0B.1C.2D.15
A.3/4B.4/3C.2D.5/2
A.当日4:00时B.次日18:00时C.次日4:00时D.当日18:00时
A.0.5B.5C.3D.2.5
A.1926B.1930C.1939D.1947
A.49B.52C.47D.73
A.81B.79C.95D.97