题目内容
当给水干管采用铜管、塑料管以及热水系统干管应按设计要求采取热补偿措施。安装补偿器必须按规定做好预拉伸。待管道()安装完毕后,除去预拉伸的支撑物,调整好坡度。
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Hansen starts by arguing that the ice melting on and around Greenland and Antarctica will【B1】______rises in sea level that are much faster than【B2】______predictions, meaning that we are likely to see several metres of sea-level rise this century. It is an argument that he has been making for a long time. Even more startling are the【B3】______that Hansen thinks will result【B4】______this rapid melt. Because fresh water is less【B5】______than saltwater, the cold, fresh meltwater will【B6】______around the coasts of Greenland and Antarctica. Around Antarctica, this surface layer will act as a blanket, floating on top of warmer, saltier water and【B7】______it from losing heat to the air.【B8】______, this heat will go into melting the underside of ice shelves and glaciers. Hansen【B9】______that the growth in sea ice around Antarctica is a sign that this is starting to【B10】______already, with freshening surface water forming sea ice more【B11】______This freshwater layer will also【B12】______the currents that carry heat from the tropics to the poles, he argues, so the tropics will warm fast while high latitudes cool down because of the cold surface waters. This【B13】______difference, will power superstorms unlike anything we have ever seen, Hanse【B14】______ Most【B15】______of all, Hansen thinks that all of this could happen with just a 2°C rise in temperature-the【B16】______safe limit. The consequences, of course, would be【B17】______"It is not difficult to imagine that【B18】______arising from forced migrations and economic collapse might make the planet【B19】______, threatening the fabric of civilisation, " the paper states. These claims do not reflect the views of most climate scientists. But here is the【B20】______message; we cannot be sure that Hansen is wrong.
【B1】
工作负责人在接到已停电许可工作命令后,()。
You are a college student and want to be a volunteer in Beijing 2022 Olympic Winter Games.
配电室至结构主体位采用埋地敷设,埋设深度为()m。电缆上下左右均匀铺50mm厚细砂,上面用红机砖满铺保护,回填细土。
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