【简答题】如图,在△ABC中,BO平分∠ABC,CO平分∠ACB,MN ∥ BC,MN过点O.若AB=12,AC=18,则△AMN的周长是______.
【简答题】A. The municipal government kept changing hands. B. The construction firm breached the contract. C. Shortage of funding delayed its construction. D. Problems of different kinds kept popping up.
【单选题】采用 56K 技术的调制解调器能够达到 56KBps 通信速率的原因是 ________ 。
【简答题】如图,AO⊥BO,O为垂足,直线CD过点O,且∠BOD=2∠AOC,求∠BOD的度数。
【简答题】下图是一个算法的程序框图,最后输出的W=( )。
【单选题】They would receive _____training under the watching eyes of the government。