【简答题】将二进制数 1011.1 转为十进制数是 ______
【单选题】在杭州随团旅行,旅游者可自愿参加观看晚会的活动,这类晚间文娱活动属于旅行社提供的( )。
【单选题】A student is (allowed) to (enter into) this room (only if) a teacher (has) given permission.
【单选题】某药t1/2为12小时,每天给药两次,每次固定剂量,使血药浓度达稳态的时间至需要
【单选题】A student is (allowed) to (enter into) this room (only if) a teacher (has given) permission.