K=2/3的地球凸起高度大于k=4/3的地球凸起高度。
参考答案:对
38先加上52,再减去53,得数[ ]
A.大于38
B.小于38
C.大于52
D.大于53
____________better ways for digging tunnels__________, the first railway tunnel under the River Thames was dug in 1884.
A.As , developing
B.With, developed
C.As , were developed
D.With, development