黑龙江省东京城重点国有林管理局辖区发生一起交通事故 致6死22伤
百度 如果简单地从总量上推算，每年城镇常住人口增加2000多万，可以新增约1000万套的住房需求，但只要认真分析一下新增城镇人口的来源及他们的收入水平，住房的实际有效需求十分有限。
Ruthenium is a chemical element. It has the chemical symbol Ru. It has the atomic number 44. It is a rare metal. It is silver white. In chemistry it is placed in a group of metal elements named the transition metals. It is also part of the platinum group. Ruthenium is found in platinum ores.
Ruthenium is used as a catalyst in some platinum alloys.
| H | He | ||||||||||||||||||||||||||||||||||||||||
| Li | Be | B | C | N | O | F | Ne | ||||||||||||||||||||||||||||||||||
| Na | Mg | Al | Si | P | S | Cl | Ar | ||||||||||||||||||||||||||||||||||
| K | Ca | Sc | Ti | V | Cr | Mn | Fe | Co | Ni | Cu | Zn | Ga | Ge | As | Se | Br | Kr | ||||||||||||||||||||||||
| Rb | Sr | Y | Zr | Nb | Mo | Tc | Ru | Rh | Pd | Ag | Cd | In | Sn | Sb | Te | I | Xe | ||||||||||||||||||||||||
| Cs | Ba | La | Ce | Pr | Nd | Pm | Sm | Eu | Gd | Tb | Dy | Ho | Er | Tm | Yb | Lu | Hf | Ta | W | Re | Os | Ir | Pt | Au | Hg | Tl | Pb | Bi | Po | At | Rn | ||||||||||
| Fr | Ra | Ac | Th | Pa | U | Np | Pu | Am | Cm | Bk | Cf | Es | Fm | Md | No | Lr | Rf | Db | Sg | Bh | Hs | Mt | Ds | Rg | Cn | Nh | Fl | Mc | Lv | Ts | Og | ||||||||||
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