Besides the above agreements , a number of hong kong s air services agreements also contain provisions on avoidance of double taxation in respect of air services income 除上述协定外，若干民用航空运输协定亦载有有关民用航空服务入息避免双重课税的条文。
Comparing the forecast with the actual figures with the exertion of exogenous factors , we measure the impact of the liberalization of china - us asa and conclude that the 1999 and 2004 revisions of china - us asa are positive 研究结果： 1999年和2004年两次修订的《中美民用航空运输协定》对中美航空运输业的表明影响都是积极的。
