劳累易于诱发，活动则症状加重的胸痹多见何证
A．心血瘀阻
B．气滞心胸
C．气阴两虚
D．心肾阴虚
E．心肾阳虚
参考答案：C,E
热线式空气流量传感器易损坏的原因是（）.
A、进气温度过高
B、进气温度过低
C、工作电压过高
D、工作电压过低
---Where is my reference book? It was here a moment ago.---Someone ___ it by mistake.
A．could have taken
B．must take
C．might take
D．must have taken
