Afterwards, we received a letter, in which he offered an a____ for his rudeness at the party.
①册封达赖和班禅 ②平定大小和卓叛乱
③设置乌里雅苏台将军 ④设置伊犁将军
人体呼吸系统的组成是( )
如图是一列简谐波某一时刻波的图象,下列说法正确的是( )