患者,男,40岁,常于晚10时左有出现中上腹隐痛。4小时前突感剧烈腹痛,呈持续性。体检:烦躁,面色苍白、冷汗、脉细速,腹壁强直、压痛及反跳痛(+),肠鸣音减少,肝浊音界缩小。
为明确诊断,需做的检查是
Despite decades of scientific research, no one yet knows how much damage human activity is doing to the environment. Humans are thought to be responsible for a whole host of environmental problems, ranging from global warning to ozone depletion. What is not in doubt, however, is the devastating effect humans are having on the animal and plant life of the planet.
Currently, an estimated 50,000 species become extinct every year. If this carries on, the impact on all living creatures is likely to be profound, says Dr. Nick Middleton, a geographer at Oxford University. " All species depend in some way on each other to survive. And the danger is that, if you remove one species from this very complex web of interrelationships, you have very little idea about the knock-on effects of other extinctions. "
Complicating matters is the fact that there are no obvious solutions to the problem. Unlike global warning and ozone depletion—which, if the political wil
A. Reduction of the impact of species extinction on others
B. Sustainable management of the world’s tropical forests
C. Encouragement of political will to reduce gas emission
D. No effective way has been found yet
某工程项目,建设单位通过公开招标方式确定某施工单位为中标人,双方签订了工程承包合同,该施工单位拟派了张某担任项目经理,在此阶段编制了预算成本计划,为了控制施工成本,项目部加强了施工定额管理和施工任务单管理、控制活劳动和物化劳动的消耗。还分析了某预制构件的定额,生产该构件的工人小组有4人组成,其时间定额为0.702日/m3;某施工机械的时间定额为0.391台班/(100m3),与之配合的工人小组有5人。
预制构件的产量定额为()m3/工日。
Uncle Sam is a tall, thin man. He’s an older man with white hair and a white beard. He often wears a tall hat, a bow tie, and the stars and stripes of the American flag.
Who is this strange-looking man Would you believe that Uncle Sam is the US government But why do you call the US government Uncle Sam
During the War of 1812, the US government hired meat packers to provide meat to the army. One of these meat packers was a man named Samuel Wilson. Samuel was a friendly and fair man. Everyone liked him and called him Uncle Sam.
Sam Wilson stamped the boxes of meat for the army with a large US for United States. Some government inspectors came to look over Sam’s company.
They asked a worker what the US on the boxes stood for. As a joke, the worker answered that these letter stood for the name of his boss, Uncle Sam.
The joke spread, and soldiers began saying that their food came from Uncle Sam. Before long, people called all things
A. ask
B. stand for
C. look over
D. see
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