(Updates prices, comment after central bank move)

* Top central banks move to avoid global liquidity crunch

China in surprise move to inject cash

* Dollar falls sharply, equities, euro rise

By Susan Thomas

LONDON, Nov 30 (Reuters) – Gold rose to the highest in almost two weeks on Wednesday after top central banks announced a co-ordinated move to avoid a global liquidity crunch, and the dollar fell.

Centrals banks from the world’s leading economies, including the U.S. Federal Reserve and the European Central Bank, said they had agreed to lower the cost of existing dollar swap lines by 50 basis points, as well other measures.

Spot gold rose more than 2 percent to $1,749.54, its highest since Nov. 17. It was $1,744.79 per ounce at 1525 GMT, from $1,714.29 late in New York on Tuesday.