Q235A属于()。
A、合金结构钢
B、合金工具钢
C、碳素结构钢
参考答案:C
男,38岁,左侧腮腺渐进性肿大1年,无压痛,CT扫描如图所示,正确的描述或诊断是()
A.左侧腮腺区见低密度肿块,CT值约为-200Hu
B.肿块边缘清楚,未见邻近结构受侵
C.囊肿
D.脂肪瘤
E.血管瘤
He is_______his father. They are both good at drawing. [ ]
A. take after
B. same as
C. similar to
D. different from