想问,曼谷bts, mrt, airport 像不像singapore 转车(interchange) 不用另外买票?

比如我从airport link A station 去到bts D station
这样我就买A station 到D station 的票就能,
还是从A station 到interchang to bts, 然后要再买张票从interchange 去到D station

会问这个问题,是因为在看bts, mrt & airport rounter是,每个都有自己的价钱。。很奇怪,