高速钢淬火加热过程产生过烧时，会导致晶界熔化，其组织中会出鱼骨状共晶莱氏体及黑色组织。
参考答案：对
— Don't you think it necessary that he _______ to Miami but to New York?
— I agree, but the problem is _______he has refused to.[ ]
A. will not be sent; that
B. not be sent; that
C. should not be sent; what
D. should not send; what
治疗胃痛之肝气犯胃证当选用的方剂为（）
A.失笑散
B.一贯煎
C.柴胡疏肝散
D.黄芪建中汤
E.清中汤
