【简答题】隧道超前支护和预加固处理措施的选择正确与否直接关系到工程的成败和造价高低,是衡量施工()能力的重要标志。
【判断题】特殊地质条件的隧道,应根据具体地质情况采取超前支护、预加固处理方案和安 全保障措施。
【判断题】相对定位是用两台接收机分别安置在基线的两端,同步观测相同的GPS卫星,以确定基线两个端点的绝对坐标。
【单选题】C In most situations, light helps us see. But nowadays humans are using too much of it so that it is in fact a kind of pollution. When it comes to looking at the night sky, too much light makes it dif...
A.
Because there are fewer and fewer stars.
B.
Because human health has been affected.
C.
Because too much light is a waste of energy.
D.
Because some of the wildlife can be harmed.
【多选题】炭疽的下列哪种情况需要进行报告()
D.
1周内、同一学校、幼儿园、自然村寨、社区、建筑工地等集体单位发生3例及以上皮肤炭疽或肠炭疽病例
【单选题】The teachers are supposed to teach us about “safe ” but most of them are too________.
【单选题】教师在下列哪种情况下不需要参与游戏( )。
A.
游戏内容贫乏或幼儿无所事事时,需要教师通过启发、诱导进一步发展与深化游戏。
B.
幼儿在游戏中遇到困难或发生冲突,自身难以解决时。
C.
教师对幼儿的部分游戏行为不太理解,需要进一步了解情况时。
【多选题】隧道道施工过程中,当遇到软弱破碎围岩时,其自支护能力是比较弱的,经常采用的预支护措施有()等。
【简答题】A.Planktons are too small to be seen. B.Most planktons have transparent tissues. C.Most planktons are practically invisible to predators. D.Planktons are fascinating organisms.