【单选题】《咏怀古迹》其一中借感慨庾信命运,表明自己心中感慨的诗句是 _______ _______ _______ _______ 。
【多选题】下列哪些是输血前应做好的准备工作
E.
血液从血库取出后先在阳光下放置15~20min
【判断题】在食品加工中,也可以靠机械强烈振动来消除气泡。
【单选题】The large passenger jets have made the traffic problems at airports ______.
B.
worse than ever before
【单选题】The computer of the airports have helped people greatly. ______,more people travel by plane in China.