拉深时,坯料变形区在切向压应力和径向拉应力的作用下,产生切向伸长和径向压缩的变形。
参考答案:错
---- Water can dissolve almost anything and give nutrients to creatures.
---- Yes, and that’s one of its __________.
A.characters
B.properties
C.qualities
D.abilities
女性,18岁。自幼就有轻伤后出血不止。该患者的诊断可能是()
A.肝炎
B.原发性血小板减少性紫癜
C.过敏性紫癜
D.血友病
E.肾炎