前列腺素()
A.巨幼红细胞性贫血
B.梗阻性黄疸所致出血
C.缺铁性贫血
D.血小板亢进症
E.肿瘤放、化疗后引起的贫血
参考答案:D
The building whose gate is _____ stands ______ to my school.
A.open; closely
B.opened; closely
C.open; close
D.close; closely
生产高档永磁铁氧体时,常用()磁场成型方法成型。