含铁料在炉内熔化和氧进行化学反应后,被还原为铁。
参考答案:错
A flounder plate,on a topping lift,is().
A.a fairlead block
B.a swivel pin for the topping lift block
C.a triangular steel plate with a hole at each corner
D.the lower block of a multiple part topping lift
若下发修改信息提示为“免税凭证号不符合要求”时如何修改?