编码器与税控存储器进行相互验证，当验证失败时，加油机应不能工作。
参考答案：错
急性梗阻性化脓性胆管炎的最常见的梗阻因素是( )。
A．胆道肿瘤B．胆管结石C．胆道蛔虫D．胆管扭转E．胆管狭窄
Write a letter to apply for a position in a local English training school. In the description you should include the following items:
1) what is the position
2) your experience and related ability.
