12月19日，国务院副总理王岐山在美国首都华盛顿与第23届中美商贸联委会美方主席、美国商务部代理部长布兰克和贸易代表柯克共同出席签约仪式。新华社记者 张军 摄     December 19,,Vice premier wang qishan in Washington and the 23rd the sino-us joint commission on commerce chairman of the United States/The us department of commerce agency minister blanc and trade representative kirk common attend the signing ceremony.Xinhua news agency reporter perturbation s