【简答题】A team of engineers at Harvard University has been inspired by Nature to create the first robotic fly. The mechanical fly has become a platform for a series of new high-tech integrated systems. Design...
【单选题】的进口段和闸门井均布置于山体中。进口段开挖成喇叭形,以使入水平顺。闸门段经渐变段与引水隧洞衔接。这种进水口适用于地质条件较好、地形坡度适中的隧洞进口。
【单选题】的进口段和闸门井均布置于山体中。进口段开挖成喇叭形,以使入水平顺。闸门段经渐变段与引水隧洞衔接。这种进水口适用于地质条件较好、地形坡度适中的隧洞进口。
【单选题】— Guess what? The university has accepted my application! — Wow! That ’ s __________ new I ’ ve heard this year, Boris! Let ’ s celebrate. A. a worse B. the worst C. a better D. the best
【多选题】下列关于闸门竖井式进水口的叙述中正确的是:
B.
其可充分利用岩石的作用,钢筋混凝土工程量较少
C.
适合于隧洞进口地质条件较好,地形坡度较抖的情况
【单选题】---Guess what? The university has accepted my application! ---Wow! That ’ s ___ news I ’ ve heard this year , Boris! Let ’ s celebrate!
【简答题】______式进水口的进口段和闸门竖井均从山体中开凿而成,适用于隧洞进口的地质条件较好、便于对外交通、地形坡度适中的情况。