What will the H.323 gateways do when they receive a call request?（） ["forward an admission request to the local gatekeeper","forward an admission request to the remote gatekeeper","send a location request to the remote gateway","send a location request to the remote gatekeeper"]
在国家加强民主、法制的进程中，
在（）以后，同平章事被认为是宰相和朝官。 ["宋代","元代","唐代","明代"]
耐药性产生的生物化学机制是什么？
蛋白质系数
色素
