地层渗透性越好时,地层水带动天然气运移的速度也就()。
参考答案:越大
No one knows how large universe is, but man has never given up the attempt to explore new stars and new planets.
A. the;/ B/; the C/:/ D the; the
沉管灌注桩在施工时应注意哪些问题?