干粉灭火剂具有灭火效率高、速度快、干粉基料来源广泛、价格低廉、对人畜无毒或低毒、对环境影响小、适用范围广等优点。
参考答案：对
The little girl walks ____________ she ______ an old woman.
A．as if; likes
B．as though; were
C．even if; likes
D．even though; were
患者，男，55岁。半年前因情志不遂，抑郁不乐，坐卧不宁，健忘失眠，渐至神志痴呆，反应迟钝，喃喃自语，问之不答，舌质淡红，舌苔腻，脉弦滑。治法为
A．养心安神，开窍解郁B．理气解郁，化痰开窍C．镇心涤痰，宁神定志D．化痰清热，和中安神E．益气镇惊，安神定志
