(Reuters) - The United States on Monday posted rule changes that impose new restrictions on exports to China, including aircraft components and many items related to semiconductors.The new rules will require licenses for U.S. companies to sell certain items to military entities, even if they are for civilian use, and do away with a civilian exception that allows certain U.S. technology to be exported without a license, if they are for a non-military entity and use.The rules were posted for..