中医护理原则中体现“先安未受邪之地”的是
A．未病先防B．以防为重C．同病异护D．异病异护E．既病防变
参考答案：E
—Excuse me. Could you tell me________?
—The traffic is too heavy.[ ]
A. where the station is
B. why the bus is late
C. when the bus is leaving
D. how to get to the station
出厂水中含有（）较高时，易使管网水产生红水和黑水现象。
A、铁、锰
B、藻类
C、铝离子
D、空气
