变压器正常运行使用年限，国家有关规定为20年。（）
参考答案：对
John said that he________ if you ______ help him.
I will if I have time.
A．wonders, can
B．knows, could
C．wondered, could
D．knew, can
深圳医疗保险门诊大病病种包括哪些？
