The world’s oceans have warmed 50 percent faster over the last 40 years than previously thought due to climate change, Australian and US climate researchers reported Wednesday. Higher ocean temperatures expand the volume of water, contributing to a rise in sea levels that is covering small island nations and threatening to destroy the low-lying, densely-populated low regions around the globe.
The study, published in the British journal Nature, adds to a growing scientific chorus of warnings about the pace and consequences rising oceans. It also serves as a corrective to a massive report issued last year by the Nobel-winning UN Intergovernmental Panel on Climate Change (IPCC), according to the authors.
Rising sea levels are driven by two things: the thermal expansion of sea water, and additional water from melting sources of ice. Both processes are caused by global warming. The ice sheet that sits atop Greenland, for example, contains enough water to raise wo
A. It causes sea levels to rise.
B. It causes sea levels to decrease.
C. It causes sea levels to remain unchanged.
D. It causes sea flood all over the globe.
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Until recently, the "science of the future" was supposed to be electronics and artificial intelligence. Today it seems more and more likely that the next great breakthroughs in technology will be brought through a combination of those two sciences with organic chemistry and genetic engineering. This combination is the science of biotechnology. Organic chemistry enables us to produce marvelous synthetic (合成的) materials. However, it is still difficult to manufacture anything that has the capacity of wool to conserve heat and also to absorb moisture. Nothing that we have been able to produce so far comes anywhere near the combination of strength, lightness and flexibility that we find in the bodies of ordinary insects. Nevertheless, scientists in the laboratory have a A. biological power sources would be put into use soon. B. oil, gas and coal could be repeatedly used in the future. C. dependence on non-renewable power sources would be reduced soon. D. the Chernobyl disaster would happen in two years. [单项选择]胆囊结石所致急性胰腺炎经非手术治疗好转应在病情控制后何时行胆囊切除术为宜
A. 1～2周 B. 4～6周 C. 2～4周 D. 1周内 E. 出院3个月后 [单选题]阿伦和梅耶所进行的综合研究提出的承诺不包括( )。
A.感情承诺 B.继续承诺 C.规范承诺 D.口头承诺 [多选题]起重机械吊装作业，吊件吊起100mm后应暂停，检查（ ），确认无误后方可继续起吊。
A.A.起重系统的稳定性 B.B.制动器的可靠性 C.C.物件的平稳性 D.D.绑扎的牢固性 [单项选择]管子的退火温度为（）
A. 400º—500º B. 600º—700º C. 700º—800º [多项选择][提示] 患者取自身大隐静脉行左前降支旁路移植术，术后6个月，患者再次出现左前胸部疼痛，口服硝酸甘油不缓解，PTCA显示移植血管完全闭塞。
A. 再次行冠状动脉搭桥术 B. PTCA治疗 C. 强心利尿治疗 D. 溶栓治疗 E. 硝酸甘油静脉输入 F. 主动脉内球囊反搏治疗 [单选题]单选题：沈阳地铁一、二号线车站站级控制时如车站ATS设备也不可用，应在车站（ ）上切换为LCW控制模式。
A.LCP盘 B.IBP盘 C.ATS D.LCW [简答题]非寿险的保险范围要比财产保险范围广泛的多。
[判断题]为防止开浇漏钢结晶器铜板的角间隙要小于0.7mm；
A.正确 B.错误 [单选题]26.心力衰竭患者给予利尿剂的目的是( )
A. 保护肾脏 B. 增加消化功能 C.加强心肌收缩力 D. 排出多余的血钾 E. 排出体内潴留的液体 我来回答: 提交
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